Nodejs String Format format()

Method Source Code

'use strict';// w ww.j  a v a  2 s .  co m

String.prototype.format = function () {
  let str = this;

  for (let i = 0; i < arguments.length; i++) {
    let reg = new RegExp("\\{" + i + "\\}", "gm");
    str = str.replace(reg, arguments[i]);
  }

  return str;
};

Related

1. 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];
     });
   };
   

2. format()

   String.prototype.format = function () {  
       var str = this;   
       for(var i = 0, j = arguments.length; i < j; i++){  
           str = str.replace(new RegExp('\\{' + i +'\\}', 'g'), arguments[i]);  
       return str;  
   

3. format()

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

4. format()

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

5. format()

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

6. 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;
   

7. format()

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

8. format()

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

9. 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;
   };