Nodejs String Format format(obj)

Method Source Code

// String Interpolation
// --------------------
// Supports #name syntax for object argument
// Or $n syntax for anonymous arguments.
String.prototype.format = function(obj) {
  var key, output, arg, replacements;
  output = this.valueOf();//  w w  w .  j a  va  2s .co  m

  if(typeof obj === 'object') {
    for(key in obj) {
      output = output.replace('#' + key, obj[key]);
    }
  } else {
    replacements = 0;
    for(arg in arguments) {
      if(output !== output = output.replace('$' + replacements)) {
        replacements++;
      }
    }
  }

  return output;
}

Related

1. format(i, safe, arg)

   String.prototype.format = function(i, safe, arg) {
     function format() {
       var str = this, len = arguments.length+1;
       for (i=0; i < len; arg = arguments[i++]) {
         safe = typeof arg === 'object' ? JSON.stringify(arg) : arg;
         str = str.replace(RegExp('\\{'+(i-1)+'\\}', 'g'), safe);
       return str;
     format.native = String.prototype.format;
     return format;
   }();
   

2. format(o)

   String.prototype.format = function (o) {
       return this.replace(/{([^{}]*)}/g,
           function (a, b) {
               var r = o[b];
               return typeof r === 'string' || typeof r === 'number' ? r : a;
       );
   };
   

3. format(o)

   String.prototype.format = function(o){
       var self = this;
       for(var i in o)self = self.replace(new RegExp("\\$\\{" + i + "\\}", "g"), o[i]);
       return self;
   };
   

4. format(obj)

   String.prototype.format = function(obj) {
     var args = arguments;
     var str = this;
     return str.replace(/\{[\w\d_-]+\}/g, function(part) {
       part = part.slice(1, -1);
       var index = parseInt(part, 10);
       if (isNaN(index)) {
         return obj[part];
       } else {
   ...
   

5. format(obj)

   String.prototype.format = function(obj) {
       var prop,
           regex,
           newFormat = this;
       for (prop in obj) {
           regex = new RegExp('#{' + prop + '}', 'g');
           newFormat = newFormat.replace(regex, obj[prop]);
       return newFormat;
   ...
   

6. format(obj)

   String.prototype.format = function (obj) {
       var text = this;
       for (var property in obj) {
           var regExp = new RegExp('#{' + property + '}', 'g');
           text = text.replace(regExp, obj[property]);
       return text;
   var options = { name: 'John' };
   ...
   

7. format(obj)

   String.prototype.format = function (obj) {
       var result = this.toString();
       for (var key in obj) {
           result = result.replace(new RegExp("{{" + key + "}}", "gi"), obj[key].toString());
       return result;
   };
   

8. format(obj)

   var path = require('path');
   var fs = require('fs');
   String.prototype.format = function(obj) {
       var args = arguments;
       var str = this;
       return str.replace(/\{[\w\d\._-]+\}/g, function(part) {
           part = part.slice(1, -1);
           var index = parseInt(part, 10);
           if (isNaN(index)) {
   ...
   

9. format(obj)

   String.prototype.format = function(obj) {
     var args = arguments;
     var str = this;
     return str.replace(/\{[\w\d\._-]+\}/g, function(part) {
       part = part.slice(1, -1);
       var index = parseInt(part, 10);
       if (isNaN(index)) {
         return dottedGet(obj, part);
       } else {
   ...