Nodejs String Format format()

Method Source Code

String.prototype.format = function() {
  var formatted = this;
  for( var arg in arguments ) {
    formatted = formatted.replace("{" + arg + "}", arguments[arg]);
  }//from w ww .j  av  a 2s  . co  m
  return formatted;
};

function assert(condition, msg) {
  if (!condition) {
    msg = msg || "Assertion failed";
    throw Error(msg);
  }
}

function FilledArray(n, value) {
  var arr = new Array(n);
  for (var i = 0; i < n; ++i) {
    arr[i] = value;
  }
  return arr;
}

function Mat(n, d) {
  this.n = n;
  this.d = d;
  this.w = FilledArray(n * d, 0);
  this.dw = FilledArray(n * d, 0);
}

function RandMat(n, d, mu, std) {
  var m = new Mat(n, d);
  for (var i = 0; i < m.w.length; ++i) {
    m.w[i] = rand(-std, std);
  }
  return m;
}

function rand(a, b) {
  return Math.random() * (b - a) + a;
}

Related

1. format()

   define(function () {
       return {
           currentDate: function () {
               var date = new Date();
               var dd = date.getDate();
               var mm = date.getMonth() + 1;
               var yyyy = date.getFullYear();
               var hh = date.getHours();
               var MM = date.getMinutes();
   ...
   

2. format()

   String.prototype.format = function () {
       var o = Array.prototype.slice.call(arguments);
       return this.replace(/{([^{}]*)}/g,
           function (match, capture) {
               var r = o[capture];
               return (typeof r === 'string' || typeof r === 'number') ? r : match;
       );
   };
   ...
   

3. format()

   String.prototype.format = function() {
     var args = arguments;
     return this.replace(/\{(\d+)\}/g, function(orig,num) {
       return typeof args[num] != 'undefined' ? args[num] : orig;
     });
   };
   

4. format()

   String.prototype.format = function() {
       var args = arguments;
       return this.replace(/{(\d+)}/g, function(match, number) {
           return typeof args[number] != 'undefined' ? args[number] : match;
       });
   };
   

5. format()

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

6. format()

   'use strict';
   String.prototype.format = function () {
     var args = arguments;
     return this.replace(/\{(\d+)\}/g, function (m, n) {
       return args[n];
     });
   };
   String.prototype.escapeRegExp = function () {
     return this.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1");
   ...
   

7. format()

   String.prototype.format = function() {
     var source = this;
     for (var i = 0; i <= arguments.length - 1; i++) {       
       var reg = new RegExp("\\{" + i + "\\}", "gm");             
       source = source.replace(reg, arguments[i]);
     return source;
   };
   Date.prototype.format = function (fmt) { 
   ...
   

8. format()

   String.prototype.format = function() {
     var formatted = this;
     for (arg in arguments) {
       formatted = formatted.replace('{' + arg + '}', arguments[arg]);
     return formatted;
   };
   

9. format()

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