How to change the width of an iframe to 100% using JavaScript ?
In this article, we are given an HTML document containing an <iframe> element and the task is to change the width of the <iframe> element to 100% with the help of JavaScript. There are two methods to change the width of the iframe which are discussed below:
Method 1: This method uses the id attribute of iframe with width property to change the width of <iframe> element. JavaScript’s code is written within the <script> tag.
HTML
<!DOCTYPE html> <html>     <head>     <title>         How to change the width of an         iframe to 100% with JavaScript?     </title> </head>      <body>     <center>         <h1 style="color:green;">             zambiatek          </h1>         <h3>             How to change the width of a <br>             to 100% with JavaScript?         </h3>         <iframe id="iframe" height="100%" width="40%"            frameborder="0" allowfullscreen>         </iframe>           <br><br>         <button onclick="changewidth()">             Click to change         </button>                   <script>               // JavaScript code to change the             // width to 100% of <iframe>             function changewidth() {                 var x = document.getElementById('iframe');                 x.style.width = "100%";             }         </script>     </center> </body>  </html> |
Output:
 Change the width of an iframe to 100%
Method 2: This method uses the id attribute of the iframe with window.innerWidth property to change the width of <iframe> element. JavaScript code is written within the <script> tag.
HTML
<!DOCTYPE html> <html> <head>     <title>         How to change the width of an         iframe to 100% with JavaScript?     </title> </head>      <body>     <center>         <h1 style="color:green;">             zambiatek          </h1>         <h3>             How to change the width of a <br>             to 100% with JavaScript?         </h3>         <iframe id="iframe" height="100%" width="40%"            frameborder="0" allowfullscreen>         </iframe>           <br><br>         <button onclick="changewidth()">             Click to change         </button>                   <script>             // JavaScript code to change the             // width to 100% of <iframe>             function changewidth() {                 var x = document.getElementById('iframe');                 x.style.width = window.innerWidth;             }         </script>     </center> </body>  </html> |
Output:
 Change the width of an iframe to 100%
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