Nodejs String Format format(options)

Method Source Code

/**//from   w  w  w . ja  v a 2  s .  c  o m
 * 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 (options) {
    var option,
        regex,
        formatted = this;

    for (option in options) {
        regex = new RegExp('#{' + option + '}', 'g');
        formatted = formatted.replace(regex, options[option]);
    }

    return formatted;
}


console.log('Hello, there! Are you #{name}?'.format({name: 'John'}));
console.log('My name is #{name} and I am #{age}-years-old'.format({name: 'John', age: 13}));

Related

1. format(options)

   console.log('TASK 1');
   var text = 'My name is #{name}. I have #{color} eyes and I am #{age}-years-old';
   String.prototype.format = function(options) {
       var option,
           result = this;
       for (option in options) {
           result = result.replace(new RegExp('#{' + option + '}', 'g'), options[option]);
       return result;
   ...
   

2. format(options)

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

3. 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;
   ...
   

4. 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;
   ...
   

5. format(options)

   console.log('1. Format with placeholders');
   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;
   };
   console.log('Hello, there! Are you #{name}?'.format({name: 'John'}));
   console.log('My name is #{name} and I am #{age}-years-old'.format({name: 'John', age: 13}));
   

6. 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;
   ...
   

7. 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;
   ...
   

8. format(options)

   String.prototype.format=function(options) {
       var string = this;
       for (var i in options) {
           var pattern = '#{' + (i) + '\\}';
           var regex = new RegExp(pattern, 'g');
           string = string.replace(regex, options[i]);
       return string;
   var options = {name: 'John'};
   console.log('Hello, there! Are you #{name}?'.format(options));
   var options = {name: 'John', age: 13};
   console.log('My name is #{name} and I am #{age}-years-old'.format(options));
   

9. format(options)

   var phraseOne = 'Hello, there! Are you #{name}?';
   var phraseTwo = 'My name is #{name} and I am #{age}-years-old';
   String.prototype.format = function (options) {
       var option,
           fullString = this;
       for (option in options) {
           var placeholder = /#\{\w+}/;
           fullString = fullString.replace(placeholder, options[option]);
       return fullString;
   };
   console.log(phraseOne.format({name: 'John'}));
   console.log(phraseTwo.format({name: 'John', age: 13}));