Nodejs String Format format(object)

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
//Example://from   w  w w  .  j  a v a2s  .co  m
//input   output
//var options = {name: 'John'};
//'Hello, there! Are you #{name}?'.format(options);   'Hello, there! Are you John'
//var options = {name: 'John', age: 13};
//'My name is #{name} and I am #{age}-years-old').format(options);   'My name is John and I am 13-year
String.prototype.format = function (object) {
    var self=this;
    for (var item in object) {
        var replaceItem = object[item],
            regExp = new RegExp('#{' + item + '}');
        self=self.replace(regExp, replaceItem);
    }
    return self;
}

var object = {
    name: 'John',
    age: 15,
    gender: 'male'
};
var str = 'My name is #{name}, I am #{age}-years-old and my gender is #{gender}'.format(object);
console.log('TASK 1:\n'+str);

Related

1. 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)) {
   ...
   

2. 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 {
   ...
   

3. 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]
   ...
   

4. format(obj)

   String.prototype.format = function(obj){
       var placeHolders = this.match(/#{\w+}/g),
           prop,
           result = this;
       for (var i = 0; i < placeHolders.length; i++) {
           prop = placeHolders[i].substring(2, placeHolders[i].length - 1);
           if (obj[prop]){
               result = result.replace(placeHolders[i], obj[prop]);
       return result;
   };
   var options = {name: 'John'};
   console.log('Hello, there! Are you #{name}?'.format(options));
   var options2 = {name: 'John', age: 13};
   console.log('My name is #{name} and I am #{age}-years-old'.format(options2));
   

5. 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 {
   ...
   

6. format(options)

   function solve(args) {
   String.prototype.format = function(options) {
       var prop,
           result = this;
       for (prop in options) {
           result = result.replace(new RegExp('#{' + prop + '}', 'g'), options[prop]);
       return result;
   };
   ...
   

7. format(options)

   String.prototype.format = function(options) {
     var option,
       toReplace,
       str = this;
     for (option in options) {
       toReplace = new RegExp('#{' + option + '}');
       str = str.replace(toReplace, options[option]);
     console.log(str);
   ...
   

8. format(options)

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

9. format(options)

   String.prototype.format = function (options) {
     return this.replace(/(?:#{(\w+)})/g, function ($0, $1) {
       return options[$1];
     });
   };
   var options1 = {name: 'John'};
   console.log('Hello, there! Are you #{name}?'.format(options1));
   var options2 = {name: 'John', age: 13};
   console.log('My name is #{name} and I am #{age}-years-old'.format(options2));
   ...