javascript - jQuery Validation - 添加自定义回调函数，检查字符串是否有空格不起作用

Question

这是我的代码，checkUsername 函数不起作用，我应该如何修复它？

<form id="register_form" method="post" action="">
    <fieldset>
        <legend>Info</legend>

        <div>
            <label>Username</label>
            <input type="text" name="username" id="username"/>
            <input type="submit" id="btnAccess" class="button" value="Submit" name="btnAccess"/>
    </fieldset>
</form>

$(document).ready(function() {
    var validator = $('#register_form').validate({
        rules: {
            username: {
                required: true,
                minlength: 4,
                checkUsername: true
            }
        },
        messages: {
            username: {
                required: "No blank",
                minlength: "Enter atleast 4 words"
            }
        }
    });

    $.validator.addMethod('checkUsername', function(value, element) {
        return /\s/g.test(value);
    },  "error");
});

http://jsfiddle.net/nambatre/rEpqr/

P/S：如果我想检查一个字符串是否有一些单词 as@等#，我该怎么办？

Answer 1

你需要返回 true 是值是 true

它应该是

$.validator.addMethod('checkUsername', function(value, element) {
    return this.optional(element) || !/\s/g.test(value);
}, "error");

演示：小提琴