Nodejs String Format format(obj)

Method Source Code

String.prototype.format = function(obj) {
  var args = arguments;
  var str = this;
  // Support either an object, or a series.
  return str.replace(/\{[\w\d_-]+\}/g, function(part) {
    // Strip off {}.
    part = part.slice(1, -1);//from   ww w. j a va 2s  .co  m
    var index = parseInt(part, 10);
    if (isNaN(index)) {
      return obj[part];
    } else {
      return args[index];
    }
  });
};

Related

1. format(format)

   String.format = function (format) {
       var args = Array.prototype.slice.call(arguments, 1);
       return format.replace(/{(\d+)}/g, function (match, number) {
           return typeof args[number] != 'undefined'
           ? args[number]
           : match;
       });
   };
   String.prototype.format = function () {
   ...
   

2. 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;
   }();
   

3. 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;
   }();
   

4. 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;
       );
   };
   

5. 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;
   };
   

6. 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;
   ...
   

7. format(obj)

   String.prototype.format = function(obj) {
     var key, output, arg, replacements;
     output = this.valueOf();
     if(typeof obj === 'object') {
       for(key in obj) {
         output = output.replace('#' + key, obj[key]);
     } else {
       replacements = 0;
   ...
   

8. 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' };
   ...
   

9. 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;
   };