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Browser History Manipulation

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Feb 04.2009

I have a web page which is created by a cgi script written in perl. This page contains many javascript jump menus using the code provided with Dreamweaver:

function MM_jumpMenu(targ,selObj,restore){ //v3.0
eval(targ+”.location='”+selObj.options[selObj.selectedIndex].value+”‘”);
if (restore) selObj.selectedIndex=0;
}

Each of these jump menus calls the script again with a different code:

<select name=”110″ onChange=”MM_jumpMenu(‘parent’,this,0)”>
<option value=”page.cgi?code=37026588OS163903639T”>Change This</option>
<option value=”page.cgi?code=7T0629158L5G080AA961″>Change That</option>
<option value=”page.cgi?code=36QJMU43508S03077022″>Change Another Thing</option>
<option value=”page.cgi?code=0R248L1C010200587958″>Change Something Else</option>
</select>

The code contains instructions on changes to be made to the page. The script makes those changes then outputs the revision. This loop can happen over and over. The script works just fine; my problem is that each time the page is diplayed, it is added to the browser’s history. I really need each instance of the page to replace the previous instance. Any help would be sincerely appreciated.

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JavaScript

4 Comments(s) ↴

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@joharranauthorFeb 17.2009 — Thanks, Fang. I understand in principle what replace() does, but I am a javascript noob and need a little more assistance.

I had hoped for a way to simply remove (rather than replace) the last entry in a browser's history. Is this possible?

If not, I need some help rewriting the script to accept a return value from the perl script and then calling replace() with it.
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@slaughtersFeb 17.2009 — You can't remove you can only prevent a page from being placed in a history list. Here are a couple of ways of using it: http://stansight.com/WordPress/2007/10/15/replacing-history/

For your code changing

eval(targ+".location[COLOR="Red"][B]=[/B][/COLOR]'"+selObj.options[selObj.selectedIndex].value+"'");

to

eval(targ+".location[COLOR="red"][B].replace([/B][/COLOR]'"+selObj.options[selObj.selectedIndex].value+"'[COLOR="Red"][B])[/B][/COLOR]");

might work. If not then go into the "page.cgi" program and change the way it navigates back to your menu to use location.replace
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@joharranauthorFeb 17.2009 — This works beautifully! You've made my day. Thanks!
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