javascript resize event not working

问题

I don't know why this doesn't work:

window.addEventListener('load', setSize(), false);
window.addEventListener('resize', setSize(), false);

function setSize(){
    width = window.innerWidth;
    console.log(width);
}

It logs the width right after load, but it doesn't do that when I resize.

回答1:

window.addEventListener('load', setSize(), false);
window.addEventListener('resize', setSize(), false);

should be:

window.addEventListener('load', setSize, false);
window.addEventListener('resize', setSize, false);

Instead of executing the function, we need to pass a reference to it.

来源：https://stackoverflow.com/questions/23122336/javascript-resize-event-not-working