Nodejs String Format format()

Method Source Code

/*//w  w  w  . ja v  a2  s.c  o m
 * we build things up so much - string.format was needed. 
 */

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;
};

Related

1. formatPV(args)

   String.prototype.formatPV = function(args) {
     if (!args) return this;
     var str = this;
     for (var arg in args) {
       str = str.replace(
         RegExp("\\{\\{" + arg + "\\}\\}", "gi"), args[arg]);
     return str;
   };
   ...
   

2. formatPhone()

   String.prototype.formatPhone = function () {
       var re = /\(?(\d{3})\)?[- ]?(\d{3})[- ]?(\d{4})/g;
       var subst = '$1-$2-$3';
       return this.replace(re, subst);
   };
   

3. formatSeconds()

   String.prototype.formatSeconds = function () {
       var sec_num = parseInt(this, 10);
       var days    = Math.floor(sec_num / 86400);
       var hours   = Math.floor((sec_num - (days * 86400)) / 3600);
       var minutes = Math.floor((sec_num - (days * 86400  + hours * 3600)) / 60);
       var seconds = sec_num - (days * 86400) - (hours * 3600) - (minutes * 60);
       var time = '';
       if (days > 0) { time += days + 'd '; }
       time += hours + 'h ' + minutes + 'm ' + seconds + 's';
   ...
   

4. formatString(input)

   String.prototype.formatString = function(input) {
       return this.replace(/(?:#{(\w+)})/g, function($0, $1) {
           return input[$1];
       });
   };
   var options = {
       name: 'John'
   };
   console.log('Hello, there! Are you #{name}?'.formatString(options));
   ...
   

5. formatString(num, comma)

   Number.prototype.formatString = function(num, comma) {
     return this.toFixed(num).toString().replace(/\.([0-9]*)$/, comma+"$1");
   

6. format()

   String.prototype.format = String.prototype.f = function () {
       var args = arguments;
       return this.replace(/\{\{|\}\}|\{(\d+)\}/g, function (m, n) {
           if (m == "{{") { return "{"; }
           if (m == "}}") { return "}"; }
           return args[n];
       });
   };
   

7. 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;
   };
   

8. 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;
   };
   

9. 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;
   };