Nodejs String Format format(obj)

Method Source Code

//Problem 1. Format with placeholders
//Write a function that formats a string. The function should have placeholders, as shown in the example
//Add the function to the String.prototype

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]);
    }// ww w.  j  a v  a 2s  .com
    return text;
}

var options = { name: 'John' };
var sentance = 'Hello, there! Are you #{name}?';

console.log(sentance.format(options));

Related

1. 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;
       );
   };
   

2. 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;
   };
   

3. 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 {
   ...
   

4. 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;
   ...
   

5. 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;
   ...
   

6. 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;
   };
   

7. 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)) {
   ...
   

8. 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 {
   ...
   

9. format(obj)

   function getParameterByName(name) {
       name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
       var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
           results = regex.exec(location.search);
       return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
   String.prototype.format = function (obj) {
       return this.replace(/\{\s*([^}\s]+)\s*\}/g, function (m, p1, offset, string) {
           return obj[p1]
   ...