How to update placeholder color using Javascript?












19















I'm searching online and I didn't find anything.
I'm trying to update the placeholder color of a textbox using javascript, but how can I do that?
I have a color picker and the color is changing.



If I have something like this in my CSS, how can I update it?






::placeholder {
color: red;
}

<input placeholder="placeholder" />





Is there a javascript command to edit this?
Something like



document.getElementById('text').style.placeholderColor = newColor;









share|improve this question





























    19















    I'm searching online and I didn't find anything.
    I'm trying to update the placeholder color of a textbox using javascript, but how can I do that?
    I have a color picker and the color is changing.



    If I have something like this in my CSS, how can I update it?






    ::placeholder {
    color: red;
    }

    <input placeholder="placeholder" />





    Is there a javascript command to edit this?
    Something like



    document.getElementById('text').style.placeholderColor = newColor;









    share|improve this question



























      19












      19








      19








      I'm searching online and I didn't find anything.
      I'm trying to update the placeholder color of a textbox using javascript, but how can I do that?
      I have a color picker and the color is changing.



      If I have something like this in my CSS, how can I update it?






      ::placeholder {
      color: red;
      }

      <input placeholder="placeholder" />





      Is there a javascript command to edit this?
      Something like



      document.getElementById('text').style.placeholderColor = newColor;









      share|improve this question
















      I'm searching online and I didn't find anything.
      I'm trying to update the placeholder color of a textbox using javascript, but how can I do that?
      I have a color picker and the color is changing.



      If I have something like this in my CSS, how can I update it?






      ::placeholder {
      color: red;
      }

      <input placeholder="placeholder" />





      Is there a javascript command to edit this?
      Something like



      document.getElementById('text').style.placeholderColor = newColor;





      ::placeholder {
      color: red;
      }

      <input placeholder="placeholder" />





      ::placeholder {
      color: red;
      }

      <input placeholder="placeholder" />






      javascript html css






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Feb 18 at 15:19









      Temani Afif

      79.9k94692




      79.9k94692










      asked Feb 18 at 14:26









      Manuel RizzoManuel Rizzo

      19513




      19513
























          2 Answers
          2






          active

          oldest

          votes


















          28














          Use CSS variables. You can also target only the needed element






          function update() {
          document.querySelector('input[type=text]').style.setProperty("--c", "blue");
          }

          ::placeholder {
          color: var(--c, red);
          }

          <input type="text" placeholder="I will be blue">
          <input type="number" placeholder="I will remain red">
          <button onclick="update()">change</button>





          CSS variable are useful when it comes to modify pseudo-class/pseudo-element that you cannot access with JS such as :before/:after/::placeholer/::selection, etc. You simply define your property using a variable that you can easily update on the element.



          Related : https://stackoverflow.com/a/49618941/8620333






          share|improve this answer





















          • 1





            Very nice, you just reminded me they existed. Thinking about, would be nice to have a ie11 supported version of this answer too...maybe later if I have time can contribute!

            – Mel Macaluso
            Feb 18 at 14:38






          • 1





            @MelMacaluso for the ie11 version we can use a class we toggle that contains the color (not very flexible though)

            – Temani Afif
            Feb 18 at 14:41








          • 1





            @DogukanCavus red is the default value ... blue will be set to only the first one when clicking the button

            – Temani Afif
            Feb 18 at 14:45






          • 1





            ok I don't understand sorry.

            – dgknca
            Feb 18 at 14:46








          • 1





            @TemaniAfif of course we can, I was hinting how we can do that with flexibility ahah

            – Mel Macaluso
            Feb 18 at 16:00



















          3














          As stated in the other answers, you cannot change pseudo-element styles inline. However, you can modify the CSS rule in the <style> itself, and you don't need a browser support ing CSS variables for that. Access the stylesheet and either get the existing rule or insert your own, then play with its style declarations like you would with an element .style:






          const {sheet} = Object.assign(document.head.appendChild(document.createElement("style")), {type: "text/css" });
          const placeholderStyle = sheet.rules[sheet.insertRule("::placeholder {}")].style;
          placeholderStyle.color = "red";

          Object.assign(document.body.appendChild(document.createElement("input")), {
          type: "button", value: "Color!", onclick() {
          placeholderStyle.color = "#"+Math.round(Math.random()*0xFFF).toString(16).padStart("0",3);
          }});

          <input placeholder="placeholder" />








          share|improve this answer
























          • How easy can this be changed to consider a dynamic selector? I suppose there is a more efficient way than this: jsfiddle.net/xqu9g7r2/1 or probably not?

            – Temani Afif
            Feb 20 at 21:37











          • @TemaniAfif You probably don't want to create a new rule on every update call, like this. But in general, yes, you need one rule per selector.

            – Bergi
            Feb 20 at 22:18






          • 1





            yes, the update was somehow what I am looking for. Thanks

            – Temani Afif
            Feb 20 at 22:26











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          2 Answers
          2






          active

          oldest

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          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          28














          Use CSS variables. You can also target only the needed element






          function update() {
          document.querySelector('input[type=text]').style.setProperty("--c", "blue");
          }

          ::placeholder {
          color: var(--c, red);
          }

          <input type="text" placeholder="I will be blue">
          <input type="number" placeholder="I will remain red">
          <button onclick="update()">change</button>





          CSS variable are useful when it comes to modify pseudo-class/pseudo-element that you cannot access with JS such as :before/:after/::placeholer/::selection, etc. You simply define your property using a variable that you can easily update on the element.



          Related : https://stackoverflow.com/a/49618941/8620333






          share|improve this answer





















          • 1





            Very nice, you just reminded me they existed. Thinking about, would be nice to have a ie11 supported version of this answer too...maybe later if I have time can contribute!

            – Mel Macaluso
            Feb 18 at 14:38






          • 1





            @MelMacaluso for the ie11 version we can use a class we toggle that contains the color (not very flexible though)

            – Temani Afif
            Feb 18 at 14:41








          • 1





            @DogukanCavus red is the default value ... blue will be set to only the first one when clicking the button

            – Temani Afif
            Feb 18 at 14:45






          • 1





            ok I don't understand sorry.

            – dgknca
            Feb 18 at 14:46








          • 1





            @TemaniAfif of course we can, I was hinting how we can do that with flexibility ahah

            – Mel Macaluso
            Feb 18 at 16:00
















          28














          Use CSS variables. You can also target only the needed element






          function update() {
          document.querySelector('input[type=text]').style.setProperty("--c", "blue");
          }

          ::placeholder {
          color: var(--c, red);
          }

          <input type="text" placeholder="I will be blue">
          <input type="number" placeholder="I will remain red">
          <button onclick="update()">change</button>





          CSS variable are useful when it comes to modify pseudo-class/pseudo-element that you cannot access with JS such as :before/:after/::placeholer/::selection, etc. You simply define your property using a variable that you can easily update on the element.



          Related : https://stackoverflow.com/a/49618941/8620333






          share|improve this answer





















          • 1





            Very nice, you just reminded me they existed. Thinking about, would be nice to have a ie11 supported version of this answer too...maybe later if I have time can contribute!

            – Mel Macaluso
            Feb 18 at 14:38






          • 1





            @MelMacaluso for the ie11 version we can use a class we toggle that contains the color (not very flexible though)

            – Temani Afif
            Feb 18 at 14:41








          • 1





            @DogukanCavus red is the default value ... blue will be set to only the first one when clicking the button

            – Temani Afif
            Feb 18 at 14:45






          • 1





            ok I don't understand sorry.

            – dgknca
            Feb 18 at 14:46








          • 1





            @TemaniAfif of course we can, I was hinting how we can do that with flexibility ahah

            – Mel Macaluso
            Feb 18 at 16:00














          28












          28








          28







          Use CSS variables. You can also target only the needed element






          function update() {
          document.querySelector('input[type=text]').style.setProperty("--c", "blue");
          }

          ::placeholder {
          color: var(--c, red);
          }

          <input type="text" placeholder="I will be blue">
          <input type="number" placeholder="I will remain red">
          <button onclick="update()">change</button>





          CSS variable are useful when it comes to modify pseudo-class/pseudo-element that you cannot access with JS such as :before/:after/::placeholer/::selection, etc. You simply define your property using a variable that you can easily update on the element.



          Related : https://stackoverflow.com/a/49618941/8620333






          share|improve this answer















          Use CSS variables. You can also target only the needed element






          function update() {
          document.querySelector('input[type=text]').style.setProperty("--c", "blue");
          }

          ::placeholder {
          color: var(--c, red);
          }

          <input type="text" placeholder="I will be blue">
          <input type="number" placeholder="I will remain red">
          <button onclick="update()">change</button>





          CSS variable are useful when it comes to modify pseudo-class/pseudo-element that you cannot access with JS such as :before/:after/::placeholer/::selection, etc. You simply define your property using a variable that you can easily update on the element.



          Related : https://stackoverflow.com/a/49618941/8620333






          function update() {
          document.querySelector('input[type=text]').style.setProperty("--c", "blue");
          }

          ::placeholder {
          color: var(--c, red);
          }

          <input type="text" placeholder="I will be blue">
          <input type="number" placeholder="I will remain red">
          <button onclick="update()">change</button>





          function update() {
          document.querySelector('input[type=text]').style.setProperty("--c", "blue");
          }

          ::placeholder {
          color: var(--c, red);
          }

          <input type="text" placeholder="I will be blue">
          <input type="number" placeholder="I will remain red">
          <button onclick="update()">change</button>






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Feb 18 at 14:38

























          answered Feb 18 at 14:29









          Temani AfifTemani Afif

          79.9k94692




          79.9k94692








          • 1





            Very nice, you just reminded me they existed. Thinking about, would be nice to have a ie11 supported version of this answer too...maybe later if I have time can contribute!

            – Mel Macaluso
            Feb 18 at 14:38






          • 1





            @MelMacaluso for the ie11 version we can use a class we toggle that contains the color (not very flexible though)

            – Temani Afif
            Feb 18 at 14:41








          • 1





            @DogukanCavus red is the default value ... blue will be set to only the first one when clicking the button

            – Temani Afif
            Feb 18 at 14:45






          • 1





            ok I don't understand sorry.

            – dgknca
            Feb 18 at 14:46








          • 1





            @TemaniAfif of course we can, I was hinting how we can do that with flexibility ahah

            – Mel Macaluso
            Feb 18 at 16:00














          • 1





            Very nice, you just reminded me they existed. Thinking about, would be nice to have a ie11 supported version of this answer too...maybe later if I have time can contribute!

            – Mel Macaluso
            Feb 18 at 14:38






          • 1





            @MelMacaluso for the ie11 version we can use a class we toggle that contains the color (not very flexible though)

            – Temani Afif
            Feb 18 at 14:41








          • 1





            @DogukanCavus red is the default value ... blue will be set to only the first one when clicking the button

            – Temani Afif
            Feb 18 at 14:45






          • 1





            ok I don't understand sorry.

            – dgknca
            Feb 18 at 14:46








          • 1





            @TemaniAfif of course we can, I was hinting how we can do that with flexibility ahah

            – Mel Macaluso
            Feb 18 at 16:00








          1




          1





          Very nice, you just reminded me they existed. Thinking about, would be nice to have a ie11 supported version of this answer too...maybe later if I have time can contribute!

          – Mel Macaluso
          Feb 18 at 14:38





          Very nice, you just reminded me they existed. Thinking about, would be nice to have a ie11 supported version of this answer too...maybe later if I have time can contribute!

          – Mel Macaluso
          Feb 18 at 14:38




          1




          1





          @MelMacaluso for the ie11 version we can use a class we toggle that contains the color (not very flexible though)

          – Temani Afif
          Feb 18 at 14:41







          @MelMacaluso for the ie11 version we can use a class we toggle that contains the color (not very flexible though)

          – Temani Afif
          Feb 18 at 14:41






          1




          1





          @DogukanCavus red is the default value ... blue will be set to only the first one when clicking the button

          – Temani Afif
          Feb 18 at 14:45





          @DogukanCavus red is the default value ... blue will be set to only the first one when clicking the button

          – Temani Afif
          Feb 18 at 14:45




          1




          1





          ok I don't understand sorry.

          – dgknca
          Feb 18 at 14:46







          ok I don't understand sorry.

          – dgknca
          Feb 18 at 14:46






          1




          1





          @TemaniAfif of course we can, I was hinting how we can do that with flexibility ahah

          – Mel Macaluso
          Feb 18 at 16:00





          @TemaniAfif of course we can, I was hinting how we can do that with flexibility ahah

          – Mel Macaluso
          Feb 18 at 16:00













          3














          As stated in the other answers, you cannot change pseudo-element styles inline. However, you can modify the CSS rule in the <style> itself, and you don't need a browser support ing CSS variables for that. Access the stylesheet and either get the existing rule or insert your own, then play with its style declarations like you would with an element .style:






          const {sheet} = Object.assign(document.head.appendChild(document.createElement("style")), {type: "text/css" });
          const placeholderStyle = sheet.rules[sheet.insertRule("::placeholder {}")].style;
          placeholderStyle.color = "red";

          Object.assign(document.body.appendChild(document.createElement("input")), {
          type: "button", value: "Color!", onclick() {
          placeholderStyle.color = "#"+Math.round(Math.random()*0xFFF).toString(16).padStart("0",3);
          }});

          <input placeholder="placeholder" />








          share|improve this answer
























          • How easy can this be changed to consider a dynamic selector? I suppose there is a more efficient way than this: jsfiddle.net/xqu9g7r2/1 or probably not?

            – Temani Afif
            Feb 20 at 21:37











          • @TemaniAfif You probably don't want to create a new rule on every update call, like this. But in general, yes, you need one rule per selector.

            – Bergi
            Feb 20 at 22:18






          • 1





            yes, the update was somehow what I am looking for. Thanks

            – Temani Afif
            Feb 20 at 22:26
















          3














          As stated in the other answers, you cannot change pseudo-element styles inline. However, you can modify the CSS rule in the <style> itself, and you don't need a browser support ing CSS variables for that. Access the stylesheet and either get the existing rule or insert your own, then play with its style declarations like you would with an element .style:






          const {sheet} = Object.assign(document.head.appendChild(document.createElement("style")), {type: "text/css" });
          const placeholderStyle = sheet.rules[sheet.insertRule("::placeholder {}")].style;
          placeholderStyle.color = "red";

          Object.assign(document.body.appendChild(document.createElement("input")), {
          type: "button", value: "Color!", onclick() {
          placeholderStyle.color = "#"+Math.round(Math.random()*0xFFF).toString(16).padStart("0",3);
          }});

          <input placeholder="placeholder" />








          share|improve this answer
























          • How easy can this be changed to consider a dynamic selector? I suppose there is a more efficient way than this: jsfiddle.net/xqu9g7r2/1 or probably not?

            – Temani Afif
            Feb 20 at 21:37











          • @TemaniAfif You probably don't want to create a new rule on every update call, like this. But in general, yes, you need one rule per selector.

            – Bergi
            Feb 20 at 22:18






          • 1





            yes, the update was somehow what I am looking for. Thanks

            – Temani Afif
            Feb 20 at 22:26














          3












          3








          3







          As stated in the other answers, you cannot change pseudo-element styles inline. However, you can modify the CSS rule in the <style> itself, and you don't need a browser support ing CSS variables for that. Access the stylesheet and either get the existing rule or insert your own, then play with its style declarations like you would with an element .style:






          const {sheet} = Object.assign(document.head.appendChild(document.createElement("style")), {type: "text/css" });
          const placeholderStyle = sheet.rules[sheet.insertRule("::placeholder {}")].style;
          placeholderStyle.color = "red";

          Object.assign(document.body.appendChild(document.createElement("input")), {
          type: "button", value: "Color!", onclick() {
          placeholderStyle.color = "#"+Math.round(Math.random()*0xFFF).toString(16).padStart("0",3);
          }});

          <input placeholder="placeholder" />








          share|improve this answer













          As stated in the other answers, you cannot change pseudo-element styles inline. However, you can modify the CSS rule in the <style> itself, and you don't need a browser support ing CSS variables for that. Access the stylesheet and either get the existing rule or insert your own, then play with its style declarations like you would with an element .style:






          const {sheet} = Object.assign(document.head.appendChild(document.createElement("style")), {type: "text/css" });
          const placeholderStyle = sheet.rules[sheet.insertRule("::placeholder {}")].style;
          placeholderStyle.color = "red";

          Object.assign(document.body.appendChild(document.createElement("input")), {
          type: "button", value: "Color!", onclick() {
          placeholderStyle.color = "#"+Math.round(Math.random()*0xFFF).toString(16).padStart("0",3);
          }});

          <input placeholder="placeholder" />








          const {sheet} = Object.assign(document.head.appendChild(document.createElement("style")), {type: "text/css" });
          const placeholderStyle = sheet.rules[sheet.insertRule("::placeholder {}")].style;
          placeholderStyle.color = "red";

          Object.assign(document.body.appendChild(document.createElement("input")), {
          type: "button", value: "Color!", onclick() {
          placeholderStyle.color = "#"+Math.round(Math.random()*0xFFF).toString(16).padStart("0",3);
          }});

          <input placeholder="placeholder" />





          const {sheet} = Object.assign(document.head.appendChild(document.createElement("style")), {type: "text/css" });
          const placeholderStyle = sheet.rules[sheet.insertRule("::placeholder {}")].style;
          placeholderStyle.color = "red";

          Object.assign(document.body.appendChild(document.createElement("input")), {
          type: "button", value: "Color!", onclick() {
          placeholderStyle.color = "#"+Math.round(Math.random()*0xFFF).toString(16).padStart("0",3);
          }});

          <input placeholder="placeholder" />






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Feb 18 at 22:20









          BergiBergi

          378k63577908




          378k63577908













          • How easy can this be changed to consider a dynamic selector? I suppose there is a more efficient way than this: jsfiddle.net/xqu9g7r2/1 or probably not?

            – Temani Afif
            Feb 20 at 21:37











          • @TemaniAfif You probably don't want to create a new rule on every update call, like this. But in general, yes, you need one rule per selector.

            – Bergi
            Feb 20 at 22:18






          • 1





            yes, the update was somehow what I am looking for. Thanks

            – Temani Afif
            Feb 20 at 22:26



















          • How easy can this be changed to consider a dynamic selector? I suppose there is a more efficient way than this: jsfiddle.net/xqu9g7r2/1 or probably not?

            – Temani Afif
            Feb 20 at 21:37











          • @TemaniAfif You probably don't want to create a new rule on every update call, like this. But in general, yes, you need one rule per selector.

            – Bergi
            Feb 20 at 22:18






          • 1





            yes, the update was somehow what I am looking for. Thanks

            – Temani Afif
            Feb 20 at 22:26

















          How easy can this be changed to consider a dynamic selector? I suppose there is a more efficient way than this: jsfiddle.net/xqu9g7r2/1 or probably not?

          – Temani Afif
          Feb 20 at 21:37





          How easy can this be changed to consider a dynamic selector? I suppose there is a more efficient way than this: jsfiddle.net/xqu9g7r2/1 or probably not?

          – Temani Afif
          Feb 20 at 21:37













          @TemaniAfif You probably don't want to create a new rule on every update call, like this. But in general, yes, you need one rule per selector.

          – Bergi
          Feb 20 at 22:18





          @TemaniAfif You probably don't want to create a new rule on every update call, like this. But in general, yes, you need one rule per selector.

          – Bergi
          Feb 20 at 22:18




          1




          1





          yes, the update was somehow what I am looking for. Thanks

          – Temani Afif
          Feb 20 at 22:26





          yes, the update was somehow what I am looking for. Thanks

          – Temani Afif
          Feb 20 at 22:26


















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