Nodejs String Format format()

Method Source Code

/**//from   w w w  .j a  v a  2  s  .c om
 * Created by gabello on 10/7/2014.
 */
String.format = function() {
    "use strict"
    // The string containing the format items (e.g. "{0}")
    // will and always has to be the first argument.
    var theString = arguments[0];

    // start with the second argument (i = 1)
    for (var i = 1; i < arguments.length; i++) {
        // "gm" = RegEx options for Global search (more than one instance)
        // and for Multiline search
        var regEx = new RegExp("\\{" + (i - 1) + "\\}", "gm");
        theString = theString.replace(regEx, arguments[i]);
    }

    return theString;
};

Related

1. format()

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

2. format()

   String.prototype.format = function () {
     var i = 0, args = arguments;
     return this.replace(/{(.*?)}/g, function (match, tagInner) {
       replacement = typeof args[i] != 'undefined' ? args[i++] : '';
       if(tagInner == "") {
           return replacement;
       } else {
           var match = tagInner.match(/^:.(\d+)f$/);
           if(match) {
   ...
   

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;
       var input = this;        
       var output = "";
       if (input.length > 0) {
           if (args[0] === undefined || args[0] === null) {
               output = "string without any arguments";
           else {
   ...
   

5. format()

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

6. 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;
   };
   ...
   

7. format(...args)

   String.prototype.format = function (...args) {
     return this.replace(/\{(\d+)\}/g, function (m, i) {
       return args[i]
     })
   

8. format(arg)

   String.prototype.format = function(arg) {
     var argLen, args, repFn, str;
     repFn = void 0;
     str = this;
     if (typeof arg === "object") {
       repFn = function(a, b) {
         if (arg[b]) {
           return arg[b];
         } else {
   ...
   

9. format(args)

       var result = this;
       if (arguments.length > 0) {    
           if (arguments.length == 1 && typeof (args) == "object") {
               for (var key in args) {
                   if(args[key]!=undefined){
                       var reg = new RegExp("({" + key + "})", "g");
                       result = result.replace(reg, args[key]);
           else {
               for (var i = 0; i < arguments.length; i++) {
                   if (arguments[i] != undefined) {
                       var reg = new RegExp("({[" + i + "]})", "g");
                       result = result.replace(reg, arguments[i]);
       return result;
   };