can't find variable: $j

Why do开发者_如何转开发 I encounter this

can't find variable: $j

when i use this method

function myMethod(htmlObject)
{
    var buttonTags = $j("button",htmlObject);
     ...
}

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My psychic powers tell me you're trying to use jQuery. In which case the name of the function is just $ (or jQuery) not $j.