HTML DOM TokenList supports() Method
The supports() method in HTML DOM is used to check if a specific token is supported in a DOM TokenList.
Syntax:
domtokenlist.supports(token)
Parameter values: It contains a single value token that specifies the name of the token which is to be checked.
Return value: It returns a boolean value that returns true if a specified token belongs to a DOM TokenList.
Example: Below HTML code illustrates the use of supports() method in HTML DOM.
HTML
<!DOCTYPE html> < html > < body style = "text-align:center" > < h1 style = "color: green;" > w3wiki </ h1 > < h2 >HTML DOM TokenList supports() Method</ h2 > < iframe id = "iframeID" src = "https://ide.w3wiki.net/index.php" > </ iframe > < p > Click on the below button if the iframe supports "allow-forms":or not </ p > < button onclick = "btnclick()" > Click Here! </ button > < p id = "paraID" style = "font-size:25px" ></ p > < script > function btnclick() { const list = document.getElementById( "iframeID").sandbox; document.getElementById("paraID").innerHTML = list.supports("allow-forms"); } </ script > </ body > </ html > |
Output:
Supported Browsers:
- Google Chrome 49 and above
- Edge 17 and above
- Internet Explorer not supported
- Firefox 49 and above
- Safari 10.1 and above
- Opera 36 and above