JavaScript implements product filtering function-JS Tutorial-php.cn

JavaScript implements product filtering function

陈政宽～

Release： 2017-06-28 11:54:40

Original

2838 people have browsed it

This article mainly introduces the JS product filtering function in detail, which has a certain reference value. Interested friends can refer to

A small JS demo of product filtering every day. Main knowledge points: Comprehensive application of DOM methods

Rendering:

Code:

<!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 href="javascript:;">锤子T1</a>
<a href="javascript:;">锤子T2</a>
<a href="javascript:;">坚果U1</a>
<a href="javascript:;">锤子M1</a>
<a href="javascript:;">坚果Pro</a>
</li>
<li>
<strong>价格:</strong>
<a href="javascript:;">3200</a>
<a href="javascript:;">2600</a>
<a href="javascript:;">899</a>
<a href="javascript:;">2799</a>
<a href="javascript:;">2299</a>
</li>
<li>
<strong>屏幕:</strong>
<a href="javascript:;">399</a>
<a href="javascript:;">600</a>
<a href="javascript:;">800</a>
<a href="javascript:;">1200</a>
</li>
</ul>
<script type="text/javascript">
(function(){
var nav = document.querySelector(&#39;nav&#39;);
var li = document.querySelectorAll(&#39;li&#39;);
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.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>

Copy after login

The above is the entire content of this article. I hope it will be helpful to everyone’s study. I also hope that everyone will support Script House.

The above is the detailed content of JavaScript implements product filtering function. For more information, please follow other related articles on the PHP Chinese website!