秋天，大雁南飞，草木枯荣，掉落下的依依不舍的树叶随着瑟瑟的秋风飞动。尽管田园一片荒凉，但金灿灿的干草已覆盖了整个大地，几颗松树笔直的立在大地上，天空是多么广阔，多么蔚蓝！地是多么浩瀚，多么无边！天和地连在了一起，已分不清地平线在哪里，秋天的原野拥抱着蓝天，广阔的蓝天拥抱着田野！
每天一个JS 小demo之商品筛选。主要知识点：DOM方法综合运用
效果图：
代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
nav {
height: 50px;
}
nav span {
margin: 0 5px;
}
.show {
color: red;
}
</style>
</head>
<body>
<nav></nav>
<ul>
<li>
<strong>手机:</strong>
<a rel="nofollow noopener noreferrer" href="javascript：;">锤子T1</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">锤子T2</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">坚果U1</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">锤子M1</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">坚果Pro</a>
</li>
<li>
<strong>价格:</strong>
<a rel="nofollow noopener noreferrer" href="javascript：;">3200</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">2600</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">899</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">2799</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">2299</a>
</li>
<li>
<strong>屏幕:</strong>
<a rel="nofollow noopener noreferrer" href="javascript：;">399</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">600</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">800</a>
<a rel="nofollow noopener noreferrer" href="javascript：;">1200</a>
</li>
</ul>
<script type="text/javascript">
(function(){
var nav = document.querySelector('nav');
var li = document.querySelectorAll('li');
var ids = [];
for(var i = 0; i <li.length; i++){
setClick(li[i],i);
}
function setClick(parent,index){
var option = parent.getElementsByTagName("a");
for(var i = 0; i < option.length; i++){
/*
建一个数组
*/
option[i].onclick = function(){
for(var i = 0; i < option.length; i++){
option[i].className = "";
}
this.className = "show";
var span = ids[index];
if(ids[index]){
span.children[0].innerHTML = this.innerHTML;
return;
}
span = document.createElement("span");
var a = document.createElement("a");
var strong = document.createElement("strong");
a.innerHTML = "x";
a.rel="nofollow noopener noreferrer" href="javascript：;";
a.onclick = function(){
nav.removeChild(span);
ids[index]="";
/*
删除元素清空数组对象位
*/
for(var i = 0; i < option.length; i++){
option[i].className = "";
}
}
strong.innerHTML = this.innerHTML;
span.appendChild(strong);
span.appendChild(a);
ids[index] = span;
/*
元素生成之后，先存入数组的对应位
*/
/*
按照数组的顺序重新添加一遍元素
*/
for(var i = 0; i < ids.length; i++){
if(ids[i]){
nav.appendChild(ids[i]);
}
}
};
}
}
})();
</script>
</body>
</html>
到此这篇关于JS实现商品筛选功能就介绍到这了。人生不售来回票，一旦动身，绝不能复返。更多相关JS实现商品筛选功能内容请查看相关栏目，小编编辑不易，再次感谢大家的支持！
