time: function () { var that = this; // 创建并保存定时器name that.data.timer = setTimeout(function () { if(second <= 0){ //清除计时器 clearTimeout(that.data.timer); } //second是设置的倒计时值，secondshow是要展示的key that.setData({ secondshow: second-- }) if(second == 0){ that.jisuan(); }else{ if(second > 0){ that.time(); } } }, 1000) }, |
我在小程序中设置了一个定时器，每秒刷新一次，对一个值进行自减；
在电脑上上显示没问题，每秒减一，但是在手机上预览时每次减2；
求大佬指导；
time(){
var that = this
let second = 10, handle = 0, loop
(loop = () => {
handle = setTimeout(function () {
if (handle) {
//清除计时器
clearTimeout(handle)
handle = 0
}
that.setData({
secondshow: second--
})
if (second <= 0) {
clearTimeout(handle)
handle = 0
that.jisuan()
} else {
loop()
}
}, 1000)
})()
}
在time函数里先执行清除定时器
time:function() {varthat =this;if(that.data.timer) {clearTimeout(that.data.timer)}...........// 创建并保存定时器name},https://developers.weixin.qq.com/s/8801NymG7Jcr 试下
上代码吧
上代码吧
time: function () {var that = this;// 创建并保存定时器namethat.data.timer = setTimeout(function () {if(second <= 0){//清除计时器clearTimeout(that.data.timer);}//second是设置要倒计时的值，secondshow是要展示的that.setData({secondshow: second--})if(second == 0){that.jisuan();}else{if(second > 0){that.time();}}}, 1000)},onLoad() {if (this.data.timer) {clearTimeout(this.data.timer)}this.loadTime()},loadTime: function() {this.data.timer = setTimeout(() => {let second = this.data.second - 1if (second <= 0) {if (this.data.timer) {clearTimeout(this.data.timer)}this.jisuan()} else {this.setData({second: second})this.loadTime()}}, 1000)},onUnload() {if (this.data.timer) {clearTimeout(this.data.timer)}},