input只可以输入数字或者是最多小数点2位的js代码

<input type="text" id="priceStr"  class="sale-input com-input money-input" value="$!{status.value}" name="${status.expression}"  maxlength="12"/>js代码$.validator.addMethod("price", function(value, element) {        var length = value.length;        var flag = false;        if(value.indexOf(".") == length - 1){            flag = false;        }else{            flag = true;        }        var price = /^[0-9]{1,9}([.]{1}[0-9]{1,2})?$/;        if(value == 0 || value > 999999999.99){            flag = false;        }        return this.optional(element) || (flag && price.test(value));    }, "请填写正确的价格，小数精确2位");  //这里用了jquery-validate.js验证插件    $(".btn-sale").click(function(){           $(".money-input").rules("add", {                required: true,            price:true,            messages: {                    required: "请填写价格",                }               });         $('.sale-form').validate();     });     $('.sale-form').validate({        rules: {                    priceStr: {                        required : true                 }        },        messages: {                    priceStr: {                        required : "请填写价格"                         }        }    });