goTo = function(target){
var scrollT = document.body.scrollTop|| document.documentElement.scrollTop
if (scrollT >target) {
var timer = setInterval(function(){
var scrollT = document.body.scrollTop|| document.documentElement.scrollTop
var step = Math.floor(-scrollT/6);
document.documentElement.scrollTop = document.body.scrollTop = step + scrollT;
if(scrollT <= target){
document.body.scrollTop = document.documentElement.scrollTop = target;
clearTimeout(timer);
}
},20)
}else if(scrollT == 0){
var timer = setInterval(function(){
var scrollT = document.body.scrollTop|| document.documentElement.scrollTop
var step = Math.floor(300/3*0.7);
document.documentElement.scrollTop = document.body.scrollTop = step + scrollT;
console.log(scrollT)
if(scrollT >= target){
document.body.scrollTop = document.documentElement.scrollTop = target;
clearTimeout(timer);
}
},20)
}else if(scrollT < target){
var timer = setInterval(function(){
var scrollT = document.body.scrollTop|| document.documentElement.scrollTop
var step = Math.floor(scrollT/6);
document.documentElement.scrollTop = document.body.scrollTop = step + scrollT;
if(scrollT >= target){
document.body.scrollTop = document.documentElement.scrollTop = target;
clearTimeout(timer);
}
},20)
}else if(target == scrollT){
return false;
}
}
直接写改变scrollTop属性可能没什么作用,但是这样写的话兼容性就有保障
滚动到指定容器的底部
window.scrollTo(0,document.querySelector("#answer-11715670").scrollHeight);
vue的写法
watch: {
messages() {
this.$nextTick(() => {
let list = this.$els.xx
list.scrollTop = list.scrollHeight
})
}
}