1.鼠标悬停在a上时打开b
2.鼠标离开a且不在b上时则关闭b
2
这个条件语句该怎么写？就是if()这段，功能代码不需要
$("#tag-btn1").on('mouseover',function(){
$('#second-tag-div1').addClass('second-tag-div-active');
$('.sidebar').addClass('z-index100');
$('#secondary-content1').addClass('display-block');
$("#second-tag-div1").on('mouseover',function(){
$('#second-tag-div1').addClass('second-tag-div-active');
$('.sidebar').addClass('z-index100');
$('#secondary-content1').addClass('display-block');
var btn1 = document.getElementById('tag-btn1');
var btn1 = document.getElementById('tag-btn1'):before;
btn1.style.backgroundColor = "#00c680";
btn1.style.color = "#FFF";
$("#tag-btn1").on('mouseout',function(){
$('#second-tag-div1').removeClass('second-tag-div-active');
$('.sidebar').removeClass('z-index100');
$('#secondary-content1').removeClass('display-block');
$("#second-tag-div1").on('mouseout',function(){
$('#second-tag-div1').removeClass('second-tag-div-active');
$('.sidebar').removeClass('z-index100');
$('#secondary-content1').removeClass('display-block');
