Nodejs String Format format(substitutions)

Method Source Code

'use strict';//from  w  ww.  jav  a2 s . c  o m

// Do simple substitutions on any String object. (Monkeypatching FTW.)
// Accepts either an array or an object of subsitutions.
// If you supply an Array:
//   `'Hello {0}.'.format(['world'])` will return: 'Hello world.'
// If you supply an Object:
//   `'Hello {world}.'.format({world: 'Earth'})` will return: 'Hello Earth.'
String.prototype.format = function(substitutions) {
  return this.replace(/\{([A-Za-z0-9]+)\}/g, function(match, key) {
    return substitutions[key] !== undefined ? substitutions[key] : ''
  })
}

Related

1. format(params)

   String.prototype.format = function (params) {
       'use strict';
       var p,
           regex,
           result;
       result = this;
       for (p in params) {
           if (params.hasOwnProperty(p)) {
               regex = new RegExp('#{' + p + '}', 'g');
   ...
   

2. format(params)

   String.prototype.format = function (params){
       var reg = /{(\d+)}/gm;
       return this.replace(reg,function(match,name){
           return params[~~name];}
       );
   };
   

3. format(string)

   function ms_to_days(m) {
     return Math.floor(m / (86400 * 1000) + 0.5)
   function date_period_to_ms(dp) {
     var ym = dp.split('-', 2)
     return new Date(ym[0], parseInt(ym[1], 10) - 1, 1);
   Date.prototype.format = function (string) {  
     string = string.replace(/%b/, I18n.t('date.abbr_month_names')[this.getMonth() + 1], 'g');
   ...
   

4. format(substitutions)

   String.prototype.format = function(substitutions) {
     return this.replace(/\{([A-Za-z0-9]+)\}/g, function(match, key) {
       return substitutions[key] !== undefined ? substitutions[key] : '';
     });
   };
   

5. format(substitutions)

   String.prototype.format = function(substitutions) {
     return this.replace(/\{([A-Za-z0-9]+)\}/g, function(match, key) { 
       return substitutions[key] !== undefined ? substitutions[key] : '';
     });
   };
   

6. format(substitutions)

   String.prototype.format = function(substitutions) {
       'use strict';
       return this.replace(/\{([A-Za-z0-9]+)\}/g, function(match, key) {
           return substitutions[key] !== undefined ? substitutions[key] : '';
       });
   };
   

7. format(values)

   var STRING_FORMAT_REGEX = /\{\{([\w\s\.\(\)\'\",-\[\]]+)?\}\}/g;
   String.prototype.format = function(values) {
       return this.replace(STRING_FORMAT_REGEX, function(match, key) {
         return values[key] || eval('(values.' +key+')');
       });
   };
   Date.prototype.format = function(format)
     format = format || "yyyy-MM-dd hh:mm:ss";
   ...
   

8. format(variables, values)

   String.prototype.format = function (variables, values) {
       var textTemplate = this;
       variables.forEach(function(item, index) {
           var value = values[index];
           if (typeof value === 'undefined' || value == null) {
               value = "";
           textTemplate = textTemplate.replaceAll(item, value);
       });
   ...
   

9. format2DigitStringformat2DigitString()

   Number.prototype.format2DigitString = function format2DigitString(){
     if(this >= 0 && this < 10) {
       return '0' + String(this);
     return String(this);