Nodejs String Sub String subst(replacements)

Method Source Code

/**/*from   w  ww. j  av a2 s.co m*/
 * Extend String class with a placeholder replacement function
 *
 * Placeholder strings must be surrounded by %, start with an uppercase character, followed by on ore more
 * uppercase characters, numbers or _
 *
 * @param {Array} replacements
 * 
 * @returns {String}
 */
String.prototype.subst = function(replacements) {
    return this.replace(/%[A-Z][A-Z0-9_]+%/g, function (placeholder) {
        return placeholder in replacements ? replacements[placeholder] : placeholder;
    });
};

Related

1. subStrings()

   String.prototype.subStrings = function () {
     var subs = [];
     for (var i = 0; i < this.length; i++) {
       for (var j = i + 1; j < this.length; j++) {
         subs.push(this.slice(i, (j + 1)));
     return subs;
   };
   ...
   

2. subStrings()

   String.prototype.subStrings = function () {
     var subs = [];
     for (var i = 0; i < this.length; i++) {
       for (var j = i+1; j <= this.length; j++) {
         subs.push(this.slice(i,j));
       };
     };
     var sorted = subs.sort();
     var uniques = [sorted[0]];
   ...
   

3. subStrings()

   String.prototype.subStrings = function () {
     result = [];
     for (var beginning = 0; beginning < this.length; beginning++) {
       for (var end = beginning + 1; end < this.length + 1; end++) {
         result.push(this.slice(beginning, end));
     return result
   var a = "cat";
   var b = a.subStrings();
   console.log(b);
   

4. subStrings()

   String.prototype.subStrings = function(){
     const substringArray = [];
     for (var i = 0; i < this.length; i++){
       for (var j = i; j < this.length; j++){
         let substring = this.slice(i,j+1);
         if (!substringArray.includes(substring)){
           substringArray.push(substring);
     return substringArray;
   console.log("abc".subStrings());
   

5. subStrs()

   String.prototype.subStrs = function() {
     var output = [];
     for( var i = 0; i < this.length; i++ ) {
       for( var j = 0; j <= this.length; j++ ) {
         if(i < j) {
           output.push(this.substring(i,j));
       };
     };
   ...
   

6. subst(replacements)

   String.prototype.subst = function (replacements) {
       "use strict";
       return this.replace(/%[A-Z][A-Z0-9_]+%/g, function (placeholder) {
           return placeholder in replacements ? replacements[placeholder] : placeholder;
       });
   };
   

7. substitute(object, regexp)

   String.prototype.substitute = function(object, regexp){
     return String(this).replace(regexp || (/\\?\{([^{}]+)\}/g), function(match, name){
       if (match.charAt(0) == '\\') return match.slice(1);
       return (object[name] !== null) ? object[name] : '';
     });
   };
   

8. substr(begin, end)

   String.prototype.substr = function(begin, end) {
     if (end === null) { end = this.length;           }
     if (begin <  0)   { begin = this.length + begin; }
     if (end <= 0)     { end = this.length + end;     }
     if (begin < 1)    { begin = end - 1/begin;       }
     if (end < 1)      { end = begin + 1/end;         }
     return this.substring(begin, end);
   

9. substr(start, length)

   String.prototype.substr = function(start, length) {
     if (start < 0) {
       start = start + this.length;
     if (!length) {
       length = this.length - start;
     var s = "";
     for (var i = start, len = this.length; i < start + length && i < len; i+) {
   ...