PhantomJS; click an element

Question

How do I click an element in PhantomJS?

page.evaluate(function() {
    document.getElementById(\'idButtonSpan\').click();  
});

This gives

Answer 1

.click() is not standard. You need to create an event and dispatch it:

function click(el){
    var ev = document.createEvent("MouseEvent");
    ev.initMouseEvent(
        "click",
        true /* bubble */, true /* cancelable */,
        window, null,
        0, 0, 0, 0, /* coordinates */
        false, false, false, false, /* modifier keys */
        0 /*left*/, null
    );
    el.dispatchEvent(ev);
}