Posted in Javascript onJune 02, 2014
"15000000".split("").reverse().join("").replace(/(\d{3})/g, "$1,").split("").reverse().join(""); "115000000".split("").reverse().join("").replace(/(\d{3})(?=[^$])/g, "$1,").split("").reverse().join("");
var cutStr = function(str) { var newStr= new Array(str.length+ parseInt(str.length/3)); newStr[newStr.length-1]=str[str.length-1]; var currentIndex=str.length-1; for(var i = newStr.length-1;i >= 0;i--) { if((newStr.length-i)%4==0) { newStr[i]=","; } else { newStr[i]=str[currentIndex--]; } } return newStr.join("") } var num="15000000"; console.log(cutStr(num)); function cutStr(str){ var rmb=''; var i2=0; for(var i=str.length-1; i>=0; i--){ if(i%3==0&&i!=0){ rmb+=str[i2]+','; }else{ rmb+=str[i2]; } i2++; } return rmb; } console.log(cutStr(num)); function cutStr(num) { var aaa = num.toString(); var arr1 = aaa.split(""); var arr2 = []; for (var i = 0; i < arr1.length;) { for (j = 0; j < 3; j++) { arr2.unshift(arr1[i]); i++; if (j == 2 && i < arr1.length) { arr2.unshift(","); } } } alert(arr2.join("")); } cutStr(12345678); '1500000000000'.replace(/\B(?=(\d{3})+$)/g,',') function formatNumber(value) { value = value.toString(); if (value.length <= 3) { return value; } else { return formatNumber(value.substr(0, value.length - 3)) + ',' + value.substr(value.length - 3); } } console.log(formatNumber(12345678)) var str = '123123211312.333123'.replace(/(?=(?!^)(?:\d{3})+(?:\.|$))(\d{3}(\.\d+$)?)/g,',$1'); console.log(str)
js下将阿拉伯数字每三位一逗号分隔(如:15000000转化为15,000,000)
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