<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body {
font-family: "Microsoft YaHei", serif;
}
body, dl, dd, p, h1, h2, h3, h4, h5, h6 {
margin: 0;
}
ol, ul, li {
margin: 0;
padding: 0;
list-style: none;
}
img {
border: none
}
</style>
</head>
<body>
<input type="text" id="input1">
<script>
let oInp = document.getElementById("input1");
// 获得焦点
// oInp.focus();
// 失去焦点
// oInp.blur();
// document.onclick = function () {
// oInp.focus()
// }
oInp.addEventListener("input", f);
function f() {
if (this.value.length>=6){
this.blur()
}
}
</script>
</body>
</html>
Python3Turtle