Question

195

Reverse a string in javascript without using any inbuilt function

rated 0 times [ 200] [ 5] / answers: 1 / hits: 25250 / 7 Years ago, tue, august 15, 2017, 12:00:00

 function reverse1(str){

  var a = ;

  for(var i = 0; i <= str.length/2; i++){

    a = str[i];

    str[i] = str[str.length-i-1];

    str[str.length-i-1] = a;

  }

  return str;

}

var str = abcdef;

reverse1(str);

I want to reverse a string without using any inbuilt function, and I want it to change the original string itself but it doesn't work well.
The language is Javascript.

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brodyfrancisi

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3 Years ago

answered 7 Years ago tayaw · Accepted Answer

Create a new string and add all the chars from the original string to it backwards:

function reverse1(str){

  var r = ;

  for(var i = str.length - 1; i >= 0; i--){

    r += str.charAt(i);

  }

  return r;

}

Then just say:

str = reverse1(str);