The example in this article describes how jQuery implements the contains method to be case-insensitive. Share it with everyone for your reference. The specific implementation method is as follows:
// NEW selector
jQuery.expr[':'].Contains = function(a, i, m){
return jQuery(a).text().toUpperCase()
.indexOf(m[3].toUpperCase()) >= 0;
};
// OVERWRITES old selecor
jQuery.expr[':'].contains = function(a, i, m){
return jQuery(a).text().toUpperCase()
.indexOf(m[3].toUpperCase()) >= 0;
};Usage:
$("div:contains('John')")Test HTML file:
<div>john</div> <div>John</div> <div>hey hey JOHN hey hey</div>
I hope this article will be helpful to everyone’s jQuery programming.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
