newbie question

[Guest alek_mil]

Hi,I've come across the following code.

function html_disableItem(nd,a){var lEl = document.getElementById(nd);if (lEl && lEl != false){   if(a){       lEl.disabled = false;       lEl.style.background = '#ffffff';    }else{       lEl.disabled = true;       lEl.style.background = '#cccccc';}}return true;}

It should disable a form on a page. In general it's quite understandable to me but I just can't figure out what's that if (lEl && lEl != false) is and how it works.

[aspnetguy]

That is just check to see if the object exists and that if it doe sit is not set to false

[scott100]

Why did they do: if (lEl && lEl != false)why not just: if (lEl != false)???

[aspnetguy]

Why did they do: if (lEl && lEl != false)why not just: if (lEl != false)???

<{POST_SNAPBACK}>

perhaps it was to accomidate an older browser?!? That's all I can think of.