千分位數字格式化(用逗號隔開 程式碼已做了修改 支援0-9位元逗號隔開)的JS程式碼_javascript技巧

             if(isNumber(number) || isString(number) || REG_NUMBER.test(number)) {

                 // 先转换成字符串
                 var toString = number + '',
                     isPoint = toString.indexOf('.'),
                     prefix,   // 前缀
                     suffix,   // 后缀
                     t = '';

                 if(isPoint > 0) {
                    prefix = toString.substring(0,isPoint);
                    suffix = toString.substring(isPoint + 1);

                 }else if(isPoint == 0) {
                    prefix = '';
                    suffix = toString.substring(1);

                 }else {
                    prefix = toString;
                    suffix = '';
                 }

                 if(prefix != '') {
                    prefixArr = prefix.split('').reverse();

                    var isArrayIndex = isArray(d,numArrs);
                    if(isArrayIndex > -1) {

                        for(var i = 0, ilen = prefixArr.length            t = prefixArr[i] ((i 1) % isArrayIndex == 0 && (i 1) ! = prefixArr.length ? "," : "");
                      split("").reverse().join("");
                       ) {
                           返回 T "." 後綴;                           return t;                    }else {
          
                   }

          
                   且有字首；

                 }else if(前綴 == '' && 後綴 != ''){
    
                                       return "有錯誤";
                 }

            }

         }
        0, ilen = arrs.length; i                 若(item = = arrs[i]) {

                    return i;
               }
            }
            return -1;
         }
         function isNumber(number) {
            return Object.prototype .toString .apply(number) === '[物件編號]';
         }

         function isString(number) {
            return Object.prototype.tocom. 🎜>

但是貌似還有一個不完善的地方就是我這樣調用console.log(numFormat("1111.00"));  在控制台上直接輸出1,111 而不是1,111.00 也就是說如果小數點後面的是0的話遊覽器自動會抹掉後面的0 其他的都正常！本人測試了下 基本符合要求 如有不完全的地方 請大家多多指教！