Alert Box and History(back)?

JavaScript
1

I need an alert box before I allow the user to return to the previous page. How can I modify the following code to utilize the history.back(); functionality?

function alertURL(url) {
if(confirm(“Are you sure you want to go to kfc.com?”)){
location=url;
}
}

<a href=“#” onClick=“alertURL(‘http://www.kfc.com’)”>Visit kfc.com</a>

2

You may have to use window.location or document.location instead of just location.

3

Mittineaque - Thanks for the response. This is what I tried:

In the header:

function confirmExit() {
check = window.confirm(“Are you sure you want to exit without saving your changes?”);
if (check == true){
location=history.back();
}
}

In the body:

<a href=“#” onClick=“confirmExit()”>Return to Previous Page</a>

I’m sure its a simple syntax error. Can you make any recommendations?

4

If back() doesn’t work as expected, you can try this.

function goBack()
{
	history.go(-1);
}

hope this helps. cb

5

Thanks much!

6

This should do it:

function goBack()
{
     if (confirm('Are you sure you want to exit without saving your changes?'))
          window.history.back();

     return false;
}

<a href="#" onclick="return goBack()">Go back.</a>

The ‘false’ return value prevents ‘#’ from being added to the history.

Just for info, history.back() has no return value, so it cannot be used in an assignment in the way you did in your example.

7

Thanks for the suggestions.