时间:2020-10-21 11:07:08 | 栏目:JavaScript代码 | 点击:次
<div class="main"> <input id="userName" type="text" placeholder="请输入用户名"> <input id="rule" type="button" value="过滤"> </div>
CSS代码:
html,body,div,input{margin:0;padding:0;} .main{width:400px;height:auto;padding:0 15px;text-align:center;} .main input{width:100%;height:35px;border:none;margin-top:20px;border-radius:5px;} input[type="text"]{text-align:left;padding-left:15px;box-sizing:border-box;border:1px solid blue;} input[type="button"]{width:50%;background:blue;} @media only screen and (max-width: 415px) { .main{width:100%;box-sizing:border-box;} }
js部分:
var userName = document.getElementById('userName'), rule = document.getElementById('rule'), regexEmpty = /^(\s|\u00A0)+|(\s|\u00A0)+$/g; rule.onclick = function (){ userName.value = userName.value.replace(regexEmpty,''); //正则替换 console.log(userName.value); }