Nodejs String Sub String substrCount(needle)

Method Source Code

/**//from  www.ja  va 2s  . com
@Name: String.prototype.substrCount
@Author: Paul Visco
@Version: 1.1 11/19/07 09/18/08
@Description: Returns the numbers of times a substring is found in a string
@Param: String needle The substring to search for within the string
@Return: Number The number of times the substring is found in the original string
@Example:
var myString = 'hello world on earth';

var answer = myString.substrCount('world');
//answer = 1;
*/
String.prototype.substrCount = function(needle){
   var cnt = 0;
   for (var i=0;i<this.length;i++) {
   if (needle == this.substr(i,needle.length))
      cnt++;
   } 
   return cnt;
};

Related

1. subst(replacements)

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

2. 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;
       });
   };
   

3. 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] : '';
     });
   };
   

4. 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);
   

5. 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+) {
   ...
   

6. substrReplace(replaceWith, start, length)

   String.prototype.substrReplace = function(replaceWith, start, length){
     return this.replace(this.substring(start, (start+length)), replaceWith );
   };
   

7. substrWoR(c)

   String.prototype.substrWoR = function(c){
     var n=1,o=0;
     while(o!=n){
       s=this.substr(0,c+(o=n)-1);
       n=s.split("\r").length;
     return s;
   

8. substrb(len)

   String.prototype.substrb = function(len){
     var str1;
     if(this.lengthb() <= len)
       return this;
     for(var i = len/2; i < this.length; i++)
       str1 = this.substr(0,i);
   ...
   

9. substring(start, end)

   String.prototype.substring = function(start, end) {
     if (start < 0) {
       start = start + this.length;
     if (!end) {
       end = this.length;
     } else if (end < 0) {
       end = end + this.length;
     var s = "";
     for (var i = start, len = this.length; i < end && i < len; i++) {
       s += this[i];
     return s;
   };