Execute Function On First Run Of Greasemonkey Script

Question

How can I run a function upon the first run of a greasemonkey script?

Answer 1

You can use GM_setValue and GM_getValue to store setting etc.

Try "getting" a flag. If it isn't set, make your first run call and then set the value. eg

var isfirstrun = GM_getValue('firstrun', '0');
if (isfirstrun == '0')
{
    // value not set, so must be the first run
    DoSomething();
    GM_setValue('firstrun', '1');
}

The docs are here