要遍历jQuery中的数组和对象，请使用jQueryforEach()循环。您可以尝试运行以下代码以了解如何遍历数组和对象-
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#button1").click(function(){
var arr = [{subject: "Maths", id:3}, {subject: "History", id:7}];
arr.forEach(function(el, index) {
alert(el.id+" "+el.subject);
});
});
});
</script>
</head>
<body>
<button id="button1">
Result
</button>
</body>
</html>