方法 1.
// 处理千分位使用
var dealThousands = function(value) {
if (value === 0) {
return parseFloat(value).toFixed(2);
}
if (value != “”) {
var num = “”;
value += “”;// 转化成字符串
value = parseFloat(value.replace(/,/g, ”)).toFixed(2);// 若需要其他小数精度，可将 2 改成变量
if (value.indexOf(“.”) == -1) {
num = value.replace(/\d{1,3}(?=(\d{3})+$)/g, function(s) {
return s + ‘,’;
});
} else {
num = value.replace(/(\d)(?=(\d{3})+\.)/g, function(s) {
return s + ‘,’;
});
}
} else {
num = “”
}
return num;
}
方法 2.
/*
* formatMoney(s,type)
* 功能：金额按千位逗号分割
* 参数：s，需要格式化的金额数值.
* 参数：type，（number 类型）金额的小数位.
* 返回：返回格式化后的数值.
*/
var formatMoney= (val,type) => {
if(val === ” || val === 0) return ‘0.00’
val = Number(val)
if(isNaN(val)) return ”
return val.toFixed(type).replace(/(\d)(?=(\d{3})+\.)/g, ‘$1,’)
}
方法 3.
formatMoney = function(s, type) {
// if (/[^0-9\.]/.test(s))
// return “0.00”;
// if(isNaN(val)) return ”
if (s == null || s == “” || s == 0)
return “0.00”;
s = Number(s)
var result = s;
if(s<0){
s=0 – s;
}
if(isNaN(s)) return ”
s = s.toString().replace(/^(\d*)$/, “$1.”);
s = (s + “00”).replace(/(\d*\.\d\d)\d*/, “$1”);
s = s.replace(“.”, “,”);
var re = /(\d)(\d{3},)/;
while (re.test(s))
s = s.replace(re, “$1,$2”);
s = s.replace(/,(\d\d)$/, “.$1”);
if (type == 0) {// 不带小数位 ( 默认是有小数位)
var a = s.split(“.”);
if (a[1] == “00”) {
s = a[0];
}
}
if(result<0){
s = ‘-‘+s
}
return s;
}