webApp开发-来一波金额数字处理

金额数字处理

/*####.## 转换成 #，###.##的金额格式*/
var cuter = function(str){
      var len = str.length,str2 = '', max = Math.floor(len / 3);
        for(var i = 0 ; i < max ; i++){
            var s = str.slice(len - 3, len);
            str = str.substr(0, len - 3);
            str2 = (',' + s) + str2;
            len = str.length;
        }
        len = str2.length;
        str += str2.substr(0, len - 4)+str2.substr(len - 3,len);
        if(str.substr(0 , 1) == ',') str = str.substr(1 , str.length-1);
        return str;
}
/*###### 转换成 #，###.##的金额格式*/
var formatCurrency = function(num) {
    if (typeof num != "string") {
            num = num.toString();
        }
        num = num.replace(/\$|\,/g,'');
        if(isNaN(num))
        num = "0";
        sign = (num == (num = Math.abs(num)));
        num = Math.floor(num*100+0.50000000001);
        cents = num%100;
        num = Math.floor(num/100).toString();
        if(cents<10)
        cents = "0" + cents;
        for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
        num = num.substring(0,num.length-(4*i+3))+','+
        num.substring(num.length-(4*i+3));
        return (((sign)?'':'-') + num + '.' + cents);
}
/*转换末尾000为千,0000为万*/
var num2halfcn =  function(str){
    var regex = new RegExp("(.*)0000$");
        str = str.replace(regex,"$1万");
        regex = new RegExp("(.*)000$");
        str = str.replace(regex,"$1千");
        return str;
}
        
    /*转换成 两位小数*/
    var num2two = function(num){
        var str = num + "";
        var index = str.indexOf(".");
        var len = str.length;
        switch(len-index){
            case len+1:str+=".00";break;
            case 1: str+="0";break;
            case 2: break;
            default:str = str.substr(0,index+3);
        }
        return str;
    }