[英]How to track clicks of one button and then another?
我需要跟踪点击大写锁定然后键盘快捷键 ctrl + alt,即先点击大写锁定然后点击键盘快捷键这里是一个例子
if (e.code == "CapsLock") {
if (e.ctrlKey && e.keyCode == 18) {
alert();
}
}
但此代码不起作用
我使用这样的函数:
document.addEventListener("keydown", function (e) {
var caps = e.getModifierState && e.getModifierState('CapsLock'); // true if pressed, false if released
document.onkeyup = function(event) {
if(caps === true){
/** Validate keys are to be processed */
var keycode = event.which;
// works off course only if ctrl key is kept pressed during key stroke = normal behavior in most OS
// Should it work like a ctrl-Lock function you have to work with a state variable
if ((event.ctrlKey === true) && (keycode === 18)) {
alert();
}
else{
/** Let it happen, don't do anything */
return;
}
}
};
});
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