Nodejs String Format format(options)

Method Source Code

/**//  w  w  w  .j a v a2  s.  co 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 prop,
        result = this;
    for (prop in options) {
        result = result.replace(new RegExp('#{' + prop + '}', 'g'), options[prop]);
    }
    return result;
};

var options = {
        name: 'John',
        age: 13
    },
    result = 'My name is #{name} and I am #{age}-years-old.'.format(options);

console.log(result);

Related

1. 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;
   ...
   

2. 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));
   ...
   

3. format(options)

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

4. 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));
   

5. 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 };
   ...
   

6. 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;
   ...
   

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('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;
   ...
   

9. 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;
   };
   ...