JQuery or [removed] How determine if shift key being pressed while clicking anchor tag hyperlink?

Question

I have an anchor tag that calls a JavaScript function.

With or without JQuery how do I determine if the shift key is down while the link is clicked?

The foll

Answer 1

var shiftDown = false;
this.onkeydown = function(evt){
    var evt2 = evt || window.event;
    var keyCode = evt2.keyCode || evt2.which;       
    if(keyCode==16)shiftDown = true;
}
this.onkeyup = function(){
    shiftDown = false;
}

demo