Nodejs String Contains contains(strPattern)

Method Source Code

String.prototype.contains = function(strPattern){
  if(typeof strPattern !== 'string') return false;
  
  var pattern = new RegExp(strPattern, "i");

  return pattern.test(this);
}

console.log("teste".contains("teste"));

Related

1. contains(str)

   String.prototype.contains = function (str) {
       return this.indexOf(str) > -1;
   };
   String.prototype.startsWith = function (str) {
       return this.indexOf(str) == 0;
   };
   String.prototype.endsWith = function (str) {
       return this.indexOf(str) > -1 && (this.indexOf(str) + str.length) == this.length;
   };
   ...
   

2. contains(str)

   String.prototype.contains = function(str) {
     return this.indexOf(str) > -1;
   };
   String.prototype.endsWith = function(suffix) {
     return this.indexOf(suffix, this.length - suffix.length) !== -1;
   };
   

3. contains(str, ignoreCase)

   String.prototype.contains = function(str, ignoreCase) {
       return (ignoreCase ? this.toUpperCase() : this)
               .indexOf(ignoreCase ? str.toUpperCase() : str) >= 0;
   };
   String.prototype.startsWith = function(str) {
       return this.indexOf(str) == 0;
   };
   

4. contains(str, index)

   String.prototype.contains = function(str, index) {
     return (this.indexOf(str, index) !== -1) ? true : false;
   

5. contains(str,startIndex)

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

6. contains(string)

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

7. contains(string)

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

8. contains(string, index)

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

9. contains(string, index)

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