HTML <script> defer Attribute
The HTML defer attribute is a Boolean attribute that is used to specify that script is executed when the page has finished parsing. This attribute only works with external scripts.
Syntax:
<script defer>
Example:
HTML
<!DOCTYPE html> < html > < head > < title > HTML < script > defer Attribute </ title > </ head > < body style = "text-align:center;" > < h1 style = "color:green" > w3wiki </ h1 > < h2 > HTML < script > defer Attribute </ h2 > < script id = "myBeginner" type = "text/javascript" src = "my_script.js" defer> </ script > < br > < button type = "button" onclick = "myFunction()" > Submit </ button > </ body > </ html > |
External script: my_script.js
javascript
function myFunction() { alert( "Script works" ); } |
Output: Before Click:
After Click:
Supported Browsers: The browsers supported by <script> defer Attribute are listed below:
- Google Chrome
- Edge 12 and above
- Internet Explorer 10 and above
- Firefox 3.5 and above
- Apple Safari
- Opera
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