<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="../js/jquery-3.5.1.js"></script>
<script>
//检测操作
//$.isArray() 判断是否为数组
$(function () {
var a = ["HTML","CSS","Javascript"];
document.writeln($.isArray(a)); // true
document.writeln("<br>");
var b = {name:"tom",age:38};
document.writeln($.isArray(b)); // false
});
/*
jQuery提供的用于检测操作的工具函数
$.isFunction(obj)
$.isArray(obj)
$.isEmptyObject(obj)
$.isPlainObject(obj)
$.contains(node1,node2);
*/
</script>
</head>
<body>
</body>
</html>jQuery练习t307，从0到1
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转载自blog.csdn.net/modern358/article/details/113809963
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