小程序点击函数节流

//index
<button bindtap='tap' data-key='abc'>tap</button>
//js
const util = require('../../utils/util.js')
 
Page({
    data: {
        text: 'tomfriwel'
    },
    onLoad: function (options) {
 
    },
    tap: util.throttle(function (e) {
        console.log(this)
        console.log(e)
        console.log((new Date()).getSeconds())
    }, 1000)

//util
function throttle(fn, gapTime) {
    if (gapTime == null || gapTime == undefined) {
        gapTime = 1500
    }
 
    let _lastTime = null
 
    // 返回新的函数
    return function () {
        let _nowTime = + new Date()
        if (_nowTime - _lastTime > gapTime || !_lastTime) {
            fn.apply(this, arguments)   //将this和参数传给原函数
            _lastTime = _nowTime
        }
    }
module.exports = {
  throttle: throttle
}