open a new window inside the current window with javaScript

Question

I'm trying to do a prompt which will lead me to another site but I want the other site to replace the current window I was in.

The code:

<button id="butt">press</button>

<script>
document.getElementById('butt').onclick = function()
{
var age = parseInt(prompt("please enter your age", "18")); //parseInt turns the string to numbers
   if(age >= 18)
   {
       window.open('http://www.walla.co.il','walla');
   }
 }  

Answer 1

You can set new location.href.

window.location.href = 'http://www.walla.co.il'

Answer 2

you can use replace method:

document.getElementById('butt').onclick = function()
{
var age = parseInt(prompt("please enter your age", "18")); //parseInt turns the string to numbers
   if(age >= 18)
   {
       window.location.replace('http://www.walla.co.il','walla');
   }
}

Answer 3

window.open("http://www.walla.co.il","_self");

Above line opens the url in the same page.