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Simple implementation method of Ajax product classification three-level linkage
Simple implementation method of Ajax product classification three-level linkage
This article mainly brings you a simple implementation (case) of three-level linkage of Ajax product classification. The editor thinks it is quite good, so I will share it with you now and give it as a reference for everyone. Let’s follow the editor to take a look, I hope it can help everyone.
Idea analysis:
Effect: When the page loads, use ajax to asynchronously request data from the background and load the first-level product category , when selecting the first-level product, load the second-level product, and when selecting the second-level product, load the third-level product.
Implementation:
#1. After getting the data, load the product with pid 0, and dynamically create an option to add the product Go to the first-level menu and set the value
2. When selecting the first-level product, load the product with pid = current id, and create an option to append the product to the second-level menu and set the value Value
3. When selecting a second-level product, load the product with pid = current id, create an option to append the product to the third-level menu, and set the value
Page effect:
##
$(function(){
//请求路径
var url="03goods.php";
//option默认内容
var option="<option value='0'>未选择</option>";
//获取jq对象
var $sel1=$(".sel1");
var $sel2=$(".sel2");
var $sel3=$(".sel3");
//自动生成一个<option>元素
function createOption(value,text){
var $option=$("<option></option>");
$option.attr("value",value);
$option.text(text);
return $option;
}
//加载数据
function ajaxSelect($select,id){
//get请求
$.get(url,{"pid":id},function(data){
$select.html(option);
for(var k in data ){
$select.append(createOption(data[k].id,data[k].name));
}
},"json");
}
//自动加载第一个下拉菜单
ajaxSelect($sel1,"0");
//选择第一个下拉菜单时加载第二个
$sel1.change(function(){
var id=$sel1.val();
if(id=="0"){
$sel2.html(option);
$sel3.html(option);
}else{
ajaxSelect($sel2,id);
}
});
//选择第二个下拉菜单时加载第三个
$sel2.change(function(){
var $id=$sel2.val();
if($id=="0"){
$sel3.html(option);
}else{
ajaxSelect($sel3,$id);
}
});
});
<?php
header('Content-Type:text/html; charset=utf-8');
//数据
$arr=array(
//array(分类id,分类名，分类的父id)
array('id'=>'1','name'=>'数码产品','pid'=>'0'),
array('id'=>'2','name'=>'家电','pid'=>'0'),
array('id'=>'3','name'=>'书籍','pid'=>'0'),
array('id'=>'4','name'=>'服装','pid'=>'0'),
array('id'=>'5','name'=>'手机','pid'=>'1'),
array('id'=>'6','name'=>'笔记本','pid'=>'1'),
array('id'=>'7','name'=>'平板电脑','pid'=>'1'),
array('id'=>'8','name'=>'智能手机','pid'=>'5'),
array('id'=>'9','name'=>'功能机','pid'=>'5'),
array('id'=>'10','name'=>'电视机','pid'=>'2'),
array('id'=>'11','name'=>'电冰箱','pid'=>'2'),
array('id'=>'12','name'=>'智能电视','pid'=>'10'),
array('id'=>'13','name'=>'编程书籍','pid'=>'3'),
array('id'=>'14','name'=>'JavaScript','pid'=>'13'),
);
//获取指定分类的商品
function getByPid($arr,$pid){
$result=array();
foreach($arr as $v){
if($v['pid']==$pid){
$result[]=$v;
}
}
return $result;
}
//获取请求参数
$pid=isset($_GET['pid'])?$_GET['pid']:'0';
$result=getByPid($arr,$pid);
//输出json数据
echo json_encode($result);
?>jquery and ajax realize three-level linkage encapsulation and non-encapsulation of provinces and municipalities
Jquery, Ajax, xml to achieve three-level linkage menu effect
Simple method to achieve ajax three-level linkage effect
The above is the detailed content of Simple implementation method of Ajax product classification three-level linkage. For more information, please follow other related articles on the PHP Chinese website!
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