jQuery验证插件不适用于检查特殊字符

Question

我正在尝试添加一种方法来检查special characters，同时它应该allow spaces between words。

jQuery.validator.addMethod("specialChrs",function(element, value) {
        return this.optional(element) || /^[A-Za-z\d= ]+$/.test(value)
}, "Special Characters not permitted");

下面是我的signup 表单。

$("#signupform").validate({

    rules: {
        name: {
            required: true,
            minlength: 3,
            specialChrs: true
        }
    },

    messages: {
        name: {
            required: "name is required",
            minlength: "name must be at least 3 characters"
        }
    }

该方法被调用，但它不检查定义的正则表达式，也有人可以在这里解释一下return this.optional(element) 是什么。

Answer 1

如果元素是可选的，this.optinal(element) 返回 true。

    jQuery.validator.addMethod("specialChrs", function (element, value) {
            return new RegExp('^[a-zA-Z0-9 ]+$').test(value)
        }, "Special Characters not permitted");


$("#signupform").validate({

    rules: {
        name: {
            required: true,
            minlength: 3,
            specialChrs: true
        }
    },

    messages: {
        name: {
            required: "name is required",
            minlength: "name must be at least 3 characters",
            specialChrs:"Special Characters not permitted",

        }
    }