You cannot but if you do ajax('func1', ['id1'], ':eval')
it will interpret the returned page as json and evaluate it. id If you return 'null' or '', it should work as expected and not raise any error. On Jun 24, 9:47 am, ilovesss2004 <yyiillu...@gmail.com> wrote: > Hi, > I use the ajax function as follows: > > ajax('func1', ['id1'], '') > > because I don't need to send some value to the html page, so I set the > third parameter null. But IE raises error > 'document.getElementById(...)' is null or not an object. > > How can I use the ajax function when I don't want to send values to > html page?