Nodejs String Format format()

Method Source Code

String.prototype.format = function () {
    var args = arguments;
    return this.replace(/{(\d+)}/g, function (match, number) {
        return typeof args[number] != 'undefined'
            ? args[number]/*from   w  w w. j  a v  a2s .  c  om*/
            : match
            ;
    });
};

random = function (max) {
    return Math.floor(Math.random(100) * max)
}

randomArray = function (max, length) {
    var result = [];
    for (var i = 0; i < length; i++) {
        result.push(random(max));
    }

    return result;
}

sumArray = function (arr) {
    return arr.reduce(function (a, b) {
        return a + b;
    }, 0)
}

Related

1. format()

   String.prototype.format= function(){
          var args = arguments;
          return this.replace(/\{(\d+)\}/g,function(s,i){
            return args[i];
          });
   

2. format()

   function log(s){ 
     if(console)
       console.log(s);
   function callStack(){
     log(new Error().stack);
   String.prototype.format = function() {
     var args = arguments;
   ...
   

3. format()

   'use strict'
   String.format = String.f = function () {
     var s = arguments[0]
     for (var i = 0; i < arguments.length; i++) {
       var regexp = new RegExp('\\{' + i + '\\}', 'gm')
       s = s.replace(regexp, (arguments[i + 1] === null ? '' : arguments[i + 1]))
     return s
   String.prototype.format = String.prototype.f = function () {
     var s = this
     for (var i = 0; i < arguments.length; i++) {
       var regexp = new RegExp('\\{' + i + '\\}', 'gm')
       s = s.replace(regexp, (arguments[i] === null ? '' : arguments[i]))
     return s
   

4. format()

   String.prototype.format = function () {
       var args = arguments;
       return this.replace(/\{\{|\}\}|\{(\d+)\}/g, function (m, n) {
           if (m == "{{") { return "{"; }
           if (m == "}}") { return "}"; }
           return args[n];
       });
   };
   

5. format()

   function package(nspace)
       var nspaceComponents = nspace.split(".");
       var parent = window;
       for (var i = 0; i < nspaceComponents.length; ++i) {
           if (typeof parent[nspaceComponents[i]] === "undefined") {
               parent[nspaceComponents[i]] = {};
           parent = parent[nspaceComponents[i]];
   ...
   

6. format()

   'use strict';
   String.prototype.format = function() {
     var content = this;
     for (var i=0; i<arguments.length; i++) {
       var placeholder = '{' + i + '}';
       content = content.replace(placeholder, arguments[i]);
     return content;
   };
   ...
   

7. format()

   var width = 584
   var height = 329
   String.prototype.format = function() {
     var formatted = this;
     for (var i = 0; i < arguments.length; i++) {
       var regexp = new RegExp('\\{'+i+'\\}', 'gi');
       formatted = formatted.replace(regexp, arguments[i]);
     return formatted;
   ...
   

8. format()

   var applicationID = '62B33EBF';
   var namespace = 'urn:x-cast:com.google.cast.sample.helloworld';
   var session = null;
   function actualizarTiempo() {
     d = new Date();
     horas = d.getHours() < 10?"0{0}".format(d.getHours()):d.getHours();
     minutos = d.getMinutes() < 10?"0{0}".format(d.getMinutes()):d.getMinutes();
     return "Actualizado a las {0}:{1}".format(horas, minutos);
   String.prototype.format = function() {
     var formatted = this;
     for (var i = 0; i < arguments.length; i++) {
       var regexp = new RegExp('\\{'+i+'\\}', 'gi');
       formatted = formatted.replace(regexp, arguments[i]);
     return formatted;
   };
   

9. format()

   function roundNumber(rnum, rlength) { 
     var newnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
     return parseFloat(newnumber); 
   String.prototype.format = function() {
     var args = arguments;
     return this.replace(/{(\d+)}/g, function(match, number) {
       return typeof args[number] != 'undefined' ? args[number] : match;
     });
   ...