Two simple methods of selecting and canceling all with JQuery

Using JQUERY to select all and cancel all is not as complicated as js and supports more browsers.
Copy codeThe Code is as follows:
<Mce: script type = "text/javascript"> <! --

$ (Function (){
$ ("# Checkall"). click (function (){
$ ("Input [@ name = 'checkname [] ']"). each (function (){
$ (This). attr ("checked", true );
});
});
$ ("# Delcheckall"). click (function (){
$ ("Input [@ name = 'checkname [] ']"). each (function (){
$ (This). attr ("checked", false );
});
});
});
// --> </Mce: script>

<Input type = 'checkbox' id = 'id1' name = 'checkname [] 'value = '1'/> value1
<Input type = 'checkbox' id = 'id2' name = 'checkname [] 'value = '2'/> value2
<Input type = 'checkbox' id = 'id3 'name = 'checkname [] 'value = '3'/> value3

<Input type = "button" id = "checkall" name = "checkall" value = "select all"/>
<Input type = "button" id = "delcheckall" name = "delcheckall" value = "cancel all"/>

A simpler one:
Copy codeThe Code is as follows:
$ ("# Checkall"). click (
Function (){
If (this. checked ){
$ ("Input [name = 'checkname']"). attr ('checked', true)
} Else {
$ ("Input [name = 'checkname']"). attr ('checked', false)
}
}
);