Amazing blank in jQuery

Source: Internet
Author: User

 

<Html>

<Head>

<Script type = "text/javascript" src = "jquery-1.6.2.js"> </script>

<Script type = "text/javascript">

$ (Function ()

{

Alert ($ ('. test: Den den'). length); // read in sequence, first. test then: hidden

Alert ($ ('. test: Den den'). length); // read simultaneously,. test &: hidden

});

</Script>

</Head>

<Body>

<Div class = "test">

<Div style = "display: none"> aaa </div>

<Div style = "display: none"> bbb </div>

<Div style = "display: none"> vvv </div>

<Div class = "test" style = "display: none"> ddd </div>

</Div>

<Div style = "display: none"> eee </div>

<Div style = "display: none"> fff </div>

</Body>

</Html>

 

Alert ($ ('. test: Den den'). length );

It is possible to read this from the end. the hidden and class name test element

This article is from the blog "stupid bird first fly ".

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