Adding Input To Div On Click With If Statement?

Nov 27, 2011

I'm trying to add a textbox to my div -- the code to add does work but when I add in the if statement to make sure that there won't be multiple inputs, the code does not work...

1. How do I debug my own scripts? I've been learning slowing but I don't know the quick way to catch an error and print to page.

2. Is there something I'm missing with this code?

if(!document.getElementById(post_id.id).innerHTML.indexOf('post_rep_box')) document.getElementById(post_id.id).innerHTML += "<input type='text' name='post_rep_box'/>"

I've also tried (post_id.id).value

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