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方法一:
parseToThousandth(num, point = 2) {
let [sInt, sFloat] = (Number.isInteger(num) ? `${num}` : num.toFixed(point)).split('.');
sInt = sInt.replace(/\d(?=(\d{3})+$)/g, '$&,');
return sFloat ? `${sInt}.${sFloat}` : `${sInt}`;
},
方法二:
var weekValue=10000000;
if(weekValue!=0){
weekValue = parseToThousandth(weekValue);//调用
console.log(weekValue);
}
function parseToThousandth(number) {
if(number==0){
return number;
}else if(number==0.0){
return number;
}
var num = number + "";
num = num.replace(new RegExp(",","g"),"");
// 正负号处理
var symble = "";
if(/^([-+]).*$/.test(num)) {
symble = num.replace(/^([-+]).*$/,"$1");
num = num.replace(/^([-+])(.*)$/,"$2");
}
if(/^[0-9]+(\.[0-9]+)?$/.test(num)) {
var num = num.replace(new RegExp("^[0]+","g"),"");
if(/^\./.test(num)) {
num = "0" + num;
}
var decimal = num.replace(/^[0-9]+(\.[0-9]+)?$/,"$1");
var integer= num.replace(/^([0-9]+)(\.[0-9]+)?$/,"$1");
var re=/(\d+)(\d{3})/;
while(re.test(integer)){
integer = integer.replace(re,"$1,$2");
}
return symble + integer + decimal;
} else {
return number;
}
}