SOURCE

function throlle(callback, time) {
    let lasttime = new Date().getTime();
    return function () {
        let now = new Date().getTime();
        if (now - lasttime > time) {
            callback();
            lasttime = now;
        }
    }
}
window.onclick = throlle(function () {
    console.log("调用了一次");
}, 1000);