jQuery 验证插件：验证以逗号作为小数分隔符的小数

HTML:

<form id="myform">
    <label for="field">Required, decimal number:</label>
    <input class="left" id="field" name="field">
    <br/>
    <input type="submit" value="Validate!">

您可以使用模式规则来传递自定义正则表达式模式，例如

$("#myform").validate({
    //for debug only
    debug: true,
    rules: {
        field: {
            required: true,
            pattern: /^(\d+|\d+,\d{1,2})$/
        }
    },
    messages: {
        field: {
            pattern: 'Please use the proper pattern'
        }
    }
});

Demo: Fiddle http://jsfiddle.net/arunpjohny/C3Ncf/

如果是重复模式，则创建自定义验证规则

jQuery.validator.addMethod("mynumber", function (value, element) {
    return this.optional(element) || /^(\d+|\d+,\d{1,2})$/.test(value);
}, "Please specify the correct number format");

$("#myform").validate({
    //for debug only
    debug: true,
    rules: {
        field: {
            required: true,
            mynumber: true
        }
    }
});

Demo: Fiddle http://jsfiddle.net/arunpjohny/5nuk8/