<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div>
<input id='user' type='text' />
//绑定getData函数
<input type="button" value="提交" onclick="getData();"/>
<div id="i1">helloworld</div>
</div>
</body>
<script>
function getData() {
//获取输入框的文本
var i=document.getElementById('user');
alert(i.value);
console.log(i.value)
}
//获取div的文本内容
var tag=document.getElementById('i1')
var content=tag.innerText
console.log(content)
</script>
</html>