Nodejs String Format format()

Method Source Code

/*/*  w  w w  . jav  a  2  s.c om*/
 * We extend here the String functionality by providing a
 * format function that allows to do something similar to
 * printf. This helps to keep the code cleaner avoiding
 * a lot of string concatenations. It can be used as:
 *
 * "The value of {0} is {1}".format(someVar, someOtherVar).
 */
String.prototype.format = function() 
{
   var result = this;
   for (var ix = 0; ix < arguments.length; ix++) 
   {
      var tagRegExp = new RegExp("\\{" + ix + "\\}", "gi");
      result = result.replace(tagRegExp, arguments[ix]);
   }
   return result;
};

Related

1. format()

   String.prototype.format = function(){
     var ret = this.toString();
     for (var i = 0; i < arguments.length; i++) {
       ret = ret.replace("%s", arguments[i]);
     return ret;
   };
   

2. format()

   String.prototype.format = function() {
       var newString = this;
       counter = 0;
       while (counter < arguments.length && newString.indexOf('{}') != -1) {
           newString = newString.replace('{}', arguments[counter++]);
       matches = newString.match(/{[0-9]+}/g);
       if (matches != null) {
           for (var i = 0; i < matches.length; i++) {
   ...
   

3. format()

   String.prototype.format = function () {
       var txt = this;
       for (var i = 0; i < arguments.length; i++) {
           var exp = new RegExp('\\{' + (i) + '\\}', 'gm');
           txt = txt.replace(exp, arguments[i]);
       return txt;
   };
   if (!String.format) {
   ...
   

4. format()

   function clearStorage() {
     localStorage.clear();
     setIcon();
   function setIcon() {
   String.prototype.format = function() {
     var formatted = this;
     for (var i = 0; i < arguments.length; i++) {
   ...
   

5. format()

   String.prototype.format = String.prototype.f = function () {
       var s = this,
           i = arguments.length;
       while (i--) {
           s = s.replace(new RegExp('\\{' + i + '\\}', 'gm'), arguments[i]);
       return s;
   };
   

6. format()

   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;
   };
   function isNullOrWhitespace(input) {
   ...
   

7. format()

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

8. format()

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

9. 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