Question

I added a function to returning my function by reverse order, later while i call it, i can’t get the result. instead the error thrown.

any one tell me the way i do is wrong?

String.prototype.reverse = function(st){
    return st.split('').reverse().join('');
}

var myString = "sample string to reverse";

var reversed = myString.reverse();

i understand my way is wrong. any one can help me to my function corrected?

Answer 1

Use ‘this’. As you are not passing any parameter to reverse.

  String.prototype.reverse = function(){
      return this.split('').reverse().join('');
  }

  var myString = "sample string to reverse";

  var reversed = myString.reverse();