Jquery選擇器特殊字符問題

場景：?$("#" + AAA + "")，AAA代表某表單ID

當AAA為普通字符串時，ok；

當AAA含有特殊符號時（eg:a.b），獲取不到該對象；

原因：特殊符號會進行轉義，上面那種方式就無法獲取的該ID。

// Does not work:

$( "#some:id" )

// Works!

$( "#some\\:id" )

// Does not work:

$( "#some.id" )

// Works!

$( "#some\\.id" )

解決：

The following function takes care of escaping these characters and places a "#" at the beginning of the ID string:

function jq( myid ) {

return "#" + myid.replace( /(:|\.|\[|\]|,)/g, "\\$1" );

}

The function can be used like so:

$( jq( "some.id" ) )

http://learn.jquery.com/using-jquery-core/faq/how-do-i-select-an-element-by-an-id-that-has-characters-used-in-css-notation/