JavaScript正则表达式验证用户名

养生一点通 • 2022-6-11 • html-js-css • 阅读 15

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Titletitle>
    <style>
        span{
            width: 100px;
            height: 15px;
            display: inline-block;
    style>
head>
<body>
    <input type="text">
    <span class="">span>
    <script>
        document.querySelector("input").onblur = function (){
                this.nextElementSibling.innerHTML = (/^(\w|-){6,16}$/.test(this.value)) ? "正确" : "错误";
        }
    script>
body>
html>