是否有 Javascript 事件来跟踪当前选项卡的失去焦点"?
Is there a Javascript Event to track the "loss of focus" of the current tab ?
这应该适用于标签切换和浏览器窗口失去焦点:
This should work both on tab switch and on browser window losing focus:
function onBlur() {
document.body.className = 'blurred';
};
function onFocus(){
document.body.className = 'focused';
};
if (/*@cc_on!@*/false) { // check for Internet Explorer
document.onfocusin = onFocus;
document.onfocusout = onBlur;
} else {
window.onfocus = onFocus;
window.onblur = onBlur;
}
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