Nodejs String Format format()

Method Source Code

String.prototype.format = function() {
    var s = this,
        i = arguments.length

    while (i--) {
        s = s.replace(new RegExp('\\{' + i + '\\}', 'gm'), arguments[i])
    }//  w  w w. ja  v a  2  s. c  om
    return s
}

Related

1. format()

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

2. format()

   var util = require('util');
   String.prototype.format = function () {
       return util.format.apply(null,
               [ this.toString() ].concat(Array.prototype.slice.call(arguments)));
   };
   

3. format()

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

4. format()

   String.prototype.format = function() {
     var formatted = this;
     _.forEach(arguments, function(arg, i) {
       formatted = formatted.replace("{" + i + "}", arg);
     });
     return formatted;
   };
   

5. format()

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

6. format()

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

7. format()

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

8. format()

   var util = require('util');
   String.prototype.format = function() {
       var args = Array.prototype.slice.call(arguments);
       args.splice(0, 0, this.toString());
       return util.format.apply(null, args);
   };
   

9. 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];
     });
   };