Nodejs String Contains contains(search)

Method Source Code

String.prototype.contains = function (search) {
    if (!search) {
        return false;
    }/* w w w  . jav  a 2s  .c o  m*/

    return this.indexOf(search) != -1;
};

Related

1. contains(pattern)

   String.prototype.contains = function(pattern) {
     return this.indexOf(pattern) !== -1;
   };
   

2. contains(pattern)

   String.prototype.contains = function(pattern) {
       return this.indexOf(pattern.canonize())>=0;
   };
   

3. contains(s)

   String.prototype.contains = function(s) {
     return this.indexOf(s) >= 0;
   };
   

4. contains(s)

   String.prototype.contains = function(s){
       return this.indexOf(s) != -1;
   };
   

5. contains(s)

   String.prototype.contains = function(s){
      return (this.indexOf(s)!=-1);
   

6. contains(search)

   String.prototype.contains = function(search)
     return this.toLowerCase().indexOf(search.toLowerCase()) !== -1;
   };
   

7. contains(searchFor)

   String.prototype.contains = function (searchFor) {
       return String.prototype.indexOf.call(this, String(searchFor)) !== -1;
   };
   

8. contains(searchString)

   String.prototype.contains = function(searchString){
       return (this.indexOf(searchString) != -1);
   };
   

9. contains(searchString)

   String.prototype.contains = function (searchString) {
     return !!~this.indexOf(searchString);
   };