Why is this javascript function running without being called?

Question

$(document).ready(SetupButtonClicks());

function SetupButtonClicks() {
    $(\'#btnJavaPHP\').click(DoPHPStuff());
}

function DoPHPStuff() {
    //stuff
}
<         


        

Answer 1

function DoPHPStuff() {
    //stuff
}

function SetupButtonClicks() {
    $('#btnJavaPHP').click(DoPHPStuff);
}

$(document).ready(SetupButtonClicks);