Regular expression form of verification

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This link: https://blog.csdn.net/litcangosh/article/details/100747329

Regular expressions: mainly used to match the string.

• html part

<div class="container" id="dv">
    <!--    label标签的作用是点击QQ或者手机字的时候，光标自动到文本框里-->
    <label for="qq">Q Q</label><input type="text" id="qq"><span></span><br/>
    <label for="phone">手机</label><input type="text" id="phone"><span></span><br/>
    <label for="e-mail">邮箱</label><input type="text" id="e-mail"><span></span><br/>
    <label for="telephone">座机</label><input type="text" id="telephone"><span></span><br/>
    <label for="fullName">姓名</label><input type="text" id="fullName"><span></span><br/>
</div>

• css section

      body {
            background: #ccc;
        }

        label {
            width: 40px;
            display: inline-block;
        }

        span {
            color: red;
        }

        .container {
            margin: 100px auto;
            width: 400px;
            padding: 50px;
            line-height: 40px;
            border: 1px solid #999;
            background: #efefef;
        }

        span {
            margin-left: 30px;
            font-size: 12px;
        }

        .wrong {
            color: red
        }

        .right {
            color: green;
        }

        .defau {
            width: 200px;
            height: 20px;
        }

        .de1 {
            background-position: 0 -20px;
        }

• js part

   //获取每个input标签，调用函数。
    checkValue(my$("qq"), /^\d{5,10}$/);
    checkValue(my$("phone"), /^\d{11}$/);
    checkValue(my$("e-mail"), /^[0-9a-zA-Z_.-]+[@][0-9a-zA-Z_.-]+([.][a-zA-Z]+){1,2}$/);
    checkValue(my$("telephone"), /^[0-9]{3,4}[-][0-9]{6}$/);
    checkValue(my$("fullName"), /^[\u4e00-\u9fa5]{2,6}$/);


    //把输入input里的值拿来与对应的正则表达式作比较
    function checkValue(input, reg) {
        input.onblur = function () {
            if (reg.test(this.value)) {
                this.nextElementSibling.innerHTML = "正确";
                this.nextElementSibling.className = "right";
            } else {
                this.nextElementSibling.innerHTML = "请输入正确的格式";
                this.nextElementSibling.className = "wrong";
            }
        };

    }