Why can't I find my div using a numeric id?

Edit: Sorry, a line got lost.

I'm making a div dynamically, which is

 <div id="102">

, with an inner class:

<a class="delete" onClick="del(102)">X</a>

In my javascript file, i'm trying to hide it with

$("#" + id).hide(2000)

But it doesn'开发者_Go百科t appear to be doing anything.

You cannot have a numeric ID. Prepend letter(s) to it, like div102.

Specs: http://www.w3.org/TR/html4/types.html#type-name.

I'm not sure what the rest of your code is, but this works.

$(document).ready(function(){
    $('body').append('<div id="102"><a class="delete" onClick="del(102)">X</a></div>');
});
function del(id){
    $("#" + id).hide(2000);
}

http://jsfiddle.net/CcBfs/

this should work. onClick="$(this).parent().hide(2000);"

$("#" + id).hide(2000) will hide the element whose id is id
But <a class="delete" onClick="del(102)">X</a> doesn't have an id
have to say: really bad question