Nodejs String Format format(options)

Method Source Code

//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,// w  w w.  ja  v a2  s .c om
      result = this;

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

Related

1. format(options)

   var jsConsole;
   String.prototype.format = function (options) {
       return this.replace(/(?:#{(\w+)})/g, function ($0, $1) {
           return options[$1];
       });
   };
   var exampleOne = { name: 'John' };
   jsConsole.writeLine('Hello, there! Are you #{name}?'.format(exampleOne));
   var exampleTwo = { name: 'John', age: 13 };
   ...
   

2. format(options)

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

3. format(options)

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

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('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;
   ...
   

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)

   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}));
   

9. 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;
   ...