等待jQuery加载

Posted 2021-02-24

Sometimes, you need to setup functionality before jQuery is loaded (e.g. because of a template). You can use this snippet to schedule the function after jQuery is loaded.

var checker = 0;
 
	function jqueryLoaded() {
		clearInterval(checker);
		//alert('jQuery is loaded, sire!');
	}
 
	function checkJquery() {
		if (window.jQuery) {
        		jqueryLoaded();
		} 
	    	if(checker == 0) {
			//alert('Setting up interval');
        		checker = window.setInterval(checkJquery, 100);
	    	}
	}	
 
	checkJquery();