uniapp如何实现长按删除

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touchstart(index) {let that = this;clearInterval(this.Loop); //再次清空定时器，防止重复注册定时器this.Loop = setTimeout(function() {uni.showModal({title: '删除',content: '请问要删除本条消息吗？',success:async function(res) {if (res.confirm) {var id = that.list[index].idlet data = await that.$http.post('api/shop/shop_qualification_image/delete',{'id':id,}).then(function(data){console.log('用户点击确定')}).catch(function(data){});} else if (res.cancel) {console.log('用户点击取消')}}});}.bind(this), 1000);},touchend() {clearInterval(this.Loop);},