Given an HTML document containing an <iframe> element and the task is to change the height of the <iframe> element to 100% with the help of JavaScript. There are two methods to change the height of the iframe which are discussed below:
Method 1: This method uses id attribute of iframe with height property to change the height of <iframe> element. JavaScript code is written within the <script> tag.
<html> <head> <title> How to change the height of an iframe to 100% with JavaScript? </title> </head> <body style="text-align:center;"> <h1 style="color:green;"> neveropen </h1> <h3> How to change the height of a <iframe id="iframe" width="100%" height="40%" frameborder="0" allowfullscreen> </iframe> to 100% with JavaScript? </h3> <br><br> <button onclick="changeHeight()"> Click to change </button> <script> // JavaScript code to change the // height to 100% of <iframe> function changeHeight() { var x = document.getElementById('iframe'); x.style.height = "100%"; } </script> </body> </html> |
Output:
- Before clicking the button:
- After clicking the button:
Method 2: This method uses the id attribute of the iframe with window.innerHeight property to change the height of <iframe> element. JavaScript code is written within the <script> tag.
<html> <head> <title> How to change the height of an iframe to 100% with JavaScript? </title> </head> <body style="text-align:center;"> <h1 style="color:green;"> neveropen </h1> <h3> How to change the height of a <iframe id="iframe" width="100%" src= frameborder="0" ></iframe> to 100% with JavaScript? </h3> <br><br> <button onclick="changeHeight()"> Click to change </button> <script> // JavaScript code to change the // height to 100% of <iframe> function changeHeight() { var x = document.getElementById('iframe'); x.style.height = window.innerHeight; } </script> </body> </html> |
Output:
- Before clicking the button:
- After clicking the button:
