So if the page changes in the future to not have a quantity_1 element, greasemonkey will run f every 5 milliseconds... forever. Yeah, f is small and quick, but even small and quick at 200 times per second, doing something that will never succeed, seems bad.

Brian

On 7/20/12 11:54 AM, Hans Henrik Bergan wrote:
// @run-at document-start
function f(){
try{
document.getElementById('quantity_1').value="25.00";
}catch(e){setTimeout(f,5);}
}
f();


will use some cpu (until it has done it's task), and its quite hackish, but i guess i think it should work
On Friday, 13 July 2012 00:15:15 UTC+2, Console wrote:

    I want to immediately change this javascript value on the fly
    before it redirects me to the page with grease monkey. I am a
    novice on grease monkey and spent quiet of a few hours reading and
    experimenting with no luck, if anyone can give me a helping hand
    on this I would appreciate it. This is the code I want to replace:

    " <input id="quantity_1" name="quantity_1" type="hidden"
    value="20.00" /> "

    to

    " " <input id="quantity_1" name="quantity_1" type="hidden"
    value="25.00" /> "


    If any more info is needed let me know, thank you in advance.

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