$ is not a function 已解決

網上查資料和不斷嘗試,終於找到原因了.

1)網上一種解釋:

If you are trying to add your own jQuery code to WordPress, and have had the error “$ is not a function” show up on Firebug, here is the fix:

Convert all dollar signs ($) to ‘jQuery’

The dollar sign is reserved in WordPress for the Prototype library, which is why it errors out. For example, instead of:

123	$().ready(function() {   $("#select_me").show();});

Change it to:

123	jQuery().ready(function() {   jQuery("#select_me").show();});

2)按照上面該法沒作用. Error msg 變成: jQuery(***).dialog is not a function.

一個下午的努力, 覺得可能是js衝突所致.  一行行刪代碼, 發現是下面一行. 原來不是方法衝突, 而是引用衝突吧?!

"<script src="<session:constant name='ContextPath'/>/js/jquery-1.8.5/js/jquery-1.4.2.min.js" type="text/javascript"></script>". 在內部Frame的jsp中, 這樣一行刪除就OK了. 可能是外部已經引用了, 刪除後jQuery的方法都正常了.