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| // 节流
| export const throttle = function (fn, delay = 300) {
| var lastTime, timer;
| return function () {
| var _this = this;
| var args = arguments;
| var nowTime = Date.now();
| if (lastTime && nowTime - lastTime < delay) {
| if (timer) clearTimeout(timer);
| timer = setTimeout(function () {
| lastTime = nowTime;
| fn.apply(_this, args);
| }, delay);
| } else {
| lastTime = nowTime;
| fn.apply(_this, args);
| }
| };
| };
|
|
