@itsdapi/taro36-virtual-list
Version:
taro36-virtual-list
36 lines • 934 B
JavaScript
import Taro from '@tarojs/taro';
/**
* 是否是 H5 环境
* @type {boolean}
*/
export const isH5 = Taro.ENV_TYPE.WEB === Taro.getEnv();
/**
* 截流函数
*
* @param {Function} fn 回调函数
* @param {number} delay 延迟毫秒数
* @param {number} mustRunDelay 延迟多少毫秒，强制执行一下
* @returns {Function} 截流函数
*/
// eslint-disable-next-line no-unused-vars
export const throttle = (fn, delay, mustRunDelay) => {
let timer;
let startTime;
return (...args) => {
const curTime = Date.now();
clearTimeout(timer);
if (!startTime) {
startTime = curTime;
}
if (curTime - startTime >= mustRunDelay) {
fn.apply(this, args);
startTime = curTime;
}
else {
timer = setTimeout(() => {
fn.apply(this, args);
}, delay);
}
};
};
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