Nodejs String Format format(args)

Method Source Code

String.prototype.format = function(args) {
    var result = this;
    if (arguments.length > 0) {    
        if (arguments.length == 1 && typeof (args) == "object") {
            for (var key in args) {
                if(args[key]!=undefined){
                    var reg = new RegExp("({" + key + "})", "g");
                    result = result.replace(reg, args[key]);
                }//from ww w .j  a  v a  2  s . co m
            }
        }
        else {
            for (var i = 0; i < arguments.length; i++) {
                if (arguments[i] != undefined) {
                    var reg = new RegExp("({[" + i + "]})", "g");
                    result = result.replace(reg, arguments[i]);
                }
            }
        }
    }
    return result;
}
// x  ={"id":1,"name":"kk"}
// "id={id},name={name}".format(x)
// "abc{0}".format(11)

Related

1. format(args)

   String.prototype.format = function(args) {
       var result = this;
       if (arguments.length < 1) {
           return result;
       var data = arguments; 
       if (arguments.length == 1 && typeof (args) == "object") {
           data = args;
       for ( var key in data) {
           var value = data[key];
           if (undefined != value) {
               result = result.replaceAll("\\{" + key + "\\}", value);
       return result;
   

2. format(args)

   String.prototype.format = function (args) {
     var str = this;
     return str.replace(String.prototype.format.regex, function(item) {
       var intVal = parseInt(item.substring(1, item.length - 1));
       var replace;
       if (intVal >= 0) {
         replace = args[intVal];
       } else if (intVal === -1) {
         replace = "{";
   ...
   

3. format(args)

   'use strict';
   String.prototype.format = function (args) {
     if (arguments.length > 0) {
       var result = this;
       if (arguments.length == 1 && typeof (args) == "object") {
         for (var key in args) {
           result = result.replace(new RegExp("({" + key + "})", "g"), args[key]);
       else {
         for (var i = 0; i < arguments.length; i++) {
           if (arguments[i] == undefined) {
             return "";
           else {
             var reg = new RegExp("({[" + i + "]})", "g");
             result = result.replace(reg, arguments[i]);
       return result;
     else {
       return this;
   };
   

4. format(args)

   String.prototype.format = function(args) {
       var result = this;
       if (arguments.length > 0) {    
           if (arguments.length == 1 && typeof (args) == "object") {
               for (var key in args) {
                   if(args[key]!=undefined){
                       var reg = new RegExp("({" + key + "})", "g");
                       result = result.replace(reg, args[key]);
           else {
               for (var i = 0; i < arguments.length; i++) {
                   if (arguments[i] != undefined) {
                       var reg = new RegExp("({[" + i + "]})", "g");
                       result = result.replace(reg, arguments[i]);
       return result;
   

5. format(args)

   String.prototype.format = function (args) {
       var result = this;
       if (arguments.length > 0) {
           if (arguments.length == 1 && typeof (args) == "object") {
               for (var key in args) {
                   if (args[key] != undefined) {
                       var reg = new RegExp("({" + key + "})", "g");
                       result = result.replace(reg, args[key]);
           else {
               for (var i = 0; i < arguments.length; i++) {
                   if (arguments[i] != undefined) {
                       var reg = new RegExp("({)" + i + "(})", "g");
                       result = result.replace(reg, arguments[i]);
       return result;
   

6. format(args)

   String.prototype.format = function(args){
     var str = this.toString(),
         result = str.match(/\$[0-9]+/gi),
         mapper = {};
     if(args.length < result.length)
       throw new Error("Index out of range.");
     for(var i = 0; i < result.length; i++){
       mapper[result[i]] = args[parseInt(result[i].replace("$", ""), 10)]
     for(var i = 0; i < result.length; i++){
       str = str.replace(result[i], mapper[result[i]]);
     return str; 
   };
   

7. format(args)

   String.prototype.format = function(args) {
       var result = this;
       if (arguments.length > 0) {    
           if (arguments.length == 1 && typeof (args) == "object") {
               for (var key in args) {
                   if(args[key]!=undefined){
                       var reg = new RegExp("({" + key + "})", "g");
                       result = result.replace(reg, args[key]);
           else {
               for (var i = 0; i < arguments.length; i++) {
                   if (arguments[i] != undefined) {
                       var reg= new RegExp("({)" + i + "(})", "g");
                       result = result.replace(reg, arguments[i]);
       return result;
   

8. format(args)

   function valPhone(phoneNumber) {
       if (!/^(13[0-9]|14[0-9]|15[0-9]|18[0-9])\d{8}$/i.test(phoneNumber)) {
           return false;
       } else {
           return true;
   String.prototype.format = function(args) {
       if (arguments.length>0) {
   ...
   

9. format(args)

   String.prototype.format = function (args) {
       var str = this;
       return str.replace(String.prototype.format.regex, function (item) {
           var intVal = parseInt(item.substring(1, item.length - 1));
           var replace;
           if (intVal >= 0) {
               replace = args[intVal];
           } else if (intVal === -1) {
               replace = "{";
   ...