Javascript jQuery验证-检查字符串是否包含unicode或空格字符'；行不通

请查看我的代码，checkUser函数不起作用。我认为value.match（）函数中有错误：

<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>

你可以在这里查看

试试看

jQuery(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 this.optional(element) || (!/\s/g.test(value) && !/[ÀÁÂÃÈÉÊÌÍÒÓÔÕÙ]/.test(value));
    },  "No space or unicode character");;
});

演示：

试试看

jQuery(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 this.optional(element) || (!/\s/g.test(value) && !/[ÀÁÂÃÈÉÊÌÍÒÓÔÕÙ]/.test(value));
    },  "No space or unicode character");;
});

演示：