<body>
<div>1111</div>
<div>2222</div>
<div>3333</div>
<p>pppp</p>
<script>
var divs = document.getElementsByTagName('div');
console.log(divs);
for (var i = 0; i < divs.length; i++) {
var div = divs[i];
console.log(div);
console.dir(div);
}
// var arr = [];
// console.log(arr);
</script>
</body>
参考链接
https://www.bilibili.com/video/BV1tW41187vH?p=4&t=620.3