Nodejs String Contains contains(str)

Method Source Code

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



module.exports = {/*from  ww  w.jav a  2  s. co m*/
   isNullOrEmpty: function(str){
      return str == null || str == '';
   }
};

Related

1. contains(search)

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

2. contains(search)

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

3. contains(searchFor)

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

4. contains(searchString)

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

5. contains(searchString)

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

6. contains(str)

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

7. contains(str)

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

8. contains(str)

   String.prototype.contains = function(str) {
       if (typeof str !== 'string') return false;
       return this.indexOf(str) !== -1;
   };
   

9. contains(str)

   String.prototype.contains = function(str) {
     return this.toLowerCase().indexOf(str.toLowerCase()) > -1;
   };