Nodejs String Format format(options)

Method Source Code

// 01. Write a function that formats a string. The function should have placeholders, as shown in the example
// Add the function to the String.prototype

var jsConsole;/*from  www  .ja va2s  .c o  m*/

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 };
jsConsole.writeLine('My name is #{name} and I am #{age}-years-old'.format(exampleTwo));

Related

1. 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);
   ...
   

2. 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;
   ...
   

3. 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));
   ...
   

4. 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;
   };
   ...
   

5. 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));
   

6. 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 = {
   ...
   

7. 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;
   ...
   

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)

   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;
   ...