【jQuery系列之插件】jquery插件之jquery-validation

equalTo方法：

equalTo: function( value, element, param ) {

            // Bind to the blur event of the target in order to revalidate whenever the target field is updated
            var target = $( param );
            if ( this.settings.onfocusout && target.not( ".validate-equalTo-blur" ).length ) {
                target.addClass( "validate-equalTo-blur" ).on( "blur.validate-equalTo", function() {
                    $( element ).valid();
                } );
            }
            return value === target.val();
        },

url验证方法：

url: function( value, element ) {

            // Copyright (c) 2010-2013 Diego Perini, MIT licensed
            // https://gist.github.com/dperini/729294
            // see also https://mathiasbynens.be/demo/url-regex
            // modified to allow protocol-relative URLs
            return this.optional( element ) || /^(?:(?:(?:https?|ftp):)?//)(?:S+(?::S*)?@)?(?:(?!(?:10|127)(?:.d{1,3}){3})(?!(?:169.254|192.168)(?:.d{1,3}){2})(?!172.(?:1[6-9]|2d|3[0-1])(?:.d{1,3}){2})(?:[1-9]d?|1dd|2[01]d|22[0-3])(?:.(?:1?d{1,2}|2[0-4]d|25[0-5])){2}(?:.(?:[1-9]d?|1dd|2[0-4]d|25[0-4]))|(?:(?:[a-zu00a1-uffff0-9]-*)*[a-zu00a1-uffff0-9]+)(?:.(?:[a-zu00a1-uffff0-9]-*)*[a-zu00a1-uffff0-9]+)*(?:.(?:[a-zu00a1-uffff]{2,})).?)(?::d{2,5})?(?:[/?#]S*)?$/i.test( value );
        },

日期date验证方法：

// http://jqueryvalidation.org/date-method/
        date: function( value, element ) {
            return this.optional( element ) || !/Invalid|NaN/.test( new Date( value ).toString() );
        },

十进制数字含小数验证方法：

// http://jqueryvalidation.org/number-method/
        number: function( value, element ) {
            return this.optional( element ) || /^(?:-?d+|-?d{1,3}(?:,d{3})+)?(?:.d+)?$/.test( value );
        },

整数验证方法：

// http://jqueryvalidation.org/digits-method/
        digits: function( value, element ) {
            return this.optional( element ) || /^d+$/.test( value );
        },

最小长度验证方法：

// http://jqueryvalidation.org/minlength-method/
        minlength: function( value, element, param ) {
            var length = $.isArray( value ) ? value.length : this.getLength( value, element );
            return this.optional( element ) || length >= param;
        },

最大长度验证方法：

// http://jqueryvalidation.org/maxlength-method/
        maxlength: function( value, element, param ) {
            var length = $.isArray( value ) ? value.length : this.getLength( value, element );
            return this.optional( element ) || length <= param;
        },

长度范围验证方法：

// http://jqueryvalidation.org/rangelength-method/
        rangelength: function( value, element, param ) {
            var length = $.isArray( value ) ? value.length : this.getLength( value, element );
            return this.optional( element ) || ( length >= param[ 0 ] && length <= param[ 1 ] );
        },

最小值，最大值，区间值验证方法：

// http://jqueryvalidation.org/min-method/
        min: function( value, element, param ) {
            return this.optional( element ) || value >= param;
        },

        // http://jqueryvalidation.org/max-method/
        max: function( value, element, param ) {
            return this.optional( element ) || value <= param;
        },

        // http://jqueryvalidation.org/range-method/
        range: function( value, element, param ) {
            return this.optional( element ) || ( value >= param[ 0 ] && value <= param[ 1 ] );
        },

两个中文字符验证：自定义方法

jQuery.validator.addMethod("byteRangeLength", function(value, element, param) {
    var length = value.length;
    for(var i = 0; i < value.length; i++){
        if(value.charCodeAt(i) > 127){
            length++;
        }
    }
  return this.optional(element) || ( length >= param[0] && length <= param[1] );   
}, $.validator.format("请确保输入的值在{0}-{1}个字节之间(一个中文字算2个字节)"));

邮政编码验证：自定义方法

// 邮政编码验证   
jQuery.validator.addMethod("isZipCode", function(value, element) {   
    var tel = /^[0-9]{6}$/;
    return this.optional(element) || (tel.test(value));
}, "请正确填写您的邮政编码");

验证提示信息：

messages: {
        required: "This field is required.",
        remote: "Please fix this field.",
        email: "Please enter a valid email address.",
        url: "Please enter a valid URL.",
        date: "Please enter a valid date.",
        dateISO: "Please enter a valid date ( ISO ).",
        number: "Please enter a valid number.",
        digits: "Please enter only digits.",
        equalTo: "Please enter the same value again.",
        maxlength: $.validator.format( "Please enter no more than {0} characters." ),
        minlength: $.validator.format( "Please enter at least {0} characters." ),
        rangelength: $.validator.format( "Please enter a value between {0} and {1} characters long." ),
        range: $.validator.format( "Please enter a value between {0} and {1}." ),
        max: $.validator.format( "Please enter a value less than or equal to {0}." ),
        min: $.validator.format( "Please enter a value greater than or equal to {0}." ),
        step: $.validator.format( "Please enter a multiple of {0}." )
    },