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Custom jQuery :icontains selector for finding element based on text in a page, case-insensitive
* Example use:
* $('div:icontains("Text in page")');
* Will return jQuery object containing any/all of the following:
* <div>text in page</div>
* <div>TEXT in PAGE</div>
* <div>Text in page</div>
$.expr[':'].icontains = $.expr.createPseudo(function(text) {
return function(e) {
return $(e).text().toUpperCase().indexOf(text.toUpperCase()) >= 0;
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