Home > Developer > JavaScript

Simple and practical example of jquery three-level linkage select

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Html and js
Copy codeThe Code is as follows:
<! DOCTYPE html>
<Html>
<Head>
<Meta charset = gbk/>
<Title> selectList </title>
<Style type = "text/css">
* {Margin: 0; padding: 0 ;}
. SelectList {width: 200px; margin: 50px auto ;}
</Style>
<Script type = "text/javascript" src = "jquery1.7.1.js"> </script>
</Head>
<Body>
<Div class = "selectList">
<Select class = "province">
<Option> select </option>
</Select>
<Select class = "city">
<Option> select </option>
</Select>
<Select class = "district">
<Option> select </option>
</Select>
</Div>
<Div class = "selectList">
<Select class = "province">
<Option> select </option>
</Select>
<Select class = "city">
<Option> select </option>
</Select>
<Select class = "district">
<Option> select </option>
</Select>
</Div>
<Script type = "text/javascript">
$ (Function (){
$ (". SelectList"). each (function (){
Var url = "area. json ";
Var areaJson;
Var temp_html;
Var oProvince = $ (this). find (". province ");
Var oCity = $ (this). find (". city ");
Var oDistrict = $ (this). find (". district ");
// Initialize the province
Var province = function (){
$. Each (areaJson, function (I, province ){
Temp_html + = "<option value = '" + province. p + "'>" + province. p + "</option> ";
});
OProvince.html (temp_html );
City ();
};
// Assign a City Value
Var city = function (){
Temp_html = "";
Var n = oProvince. get (0). selectedIndex;
$. Each (areaJson [n]. c, function (I, city ){
Temp_html + = "<option value = '" + city. ct + "'>" + city. ct + "</option> ";
});
OCity.html (temp_html );
District ();
};
// County
Var district = function (){
Temp_html = "";
Var m = oProvince. get (0). selectedIndex;
Var n = oCity. get (0). selectedIndex;
If (typeof (areaJson [m]. c [n]. d) = "undefined "){
ODistrict.css ("display", "none ");
} Else {
ODistrict.css ("display", "inline ");
$. Each (areaJson [m]. c [n]. d, function (I, district ){
Temp_html + = "<option value = '" + district. dt + "'>" + district. dt + "</option> ";
});
ODistrict.html (temp_html );
};
};
// Select province to change City
OProvince. change (function (){
City ();
});
// Select the city change County
OCity. change (function (){
District ();
});
// Obtain json data
$. GetJSON (url, function (data ){
AreaJson = data;
Province ();
});
});
});
</Script>
</Body>
</Html>

Json file (area. json). Here is only an example. Add or write the file as needed.
Copy codeThe Code is as follows:
[
{"P": "Jiangxi Province ",
"C ":[
{"Ct": "Nanchang city ",
"D ":[
{"Dt": "Xihu District "},
{"Dt": "Donghu district "},
{"Dt": "High-Tech Zone "}
]},
{"Ct": "Ganzhou City ",
"D ":[
{"Dt": "Ruijin county "},
{"Dt": "Nanfeng county "},
{"Dt": "quannan county "}
]}
]},
{"P": "Beijing ",
"C ":[
{"Ct": "Dongcheng District "},
{"Ct": "Xicheng district "}
]},
{"P": "Hebei Province ",
"C ":[
{"Ct": "Shijiazhuang ",
"D ":[
{"Dt": "Chang 'an district "},
{"Dt": "qiaodong district "},
{"Dt": "qiaoxi district "}
]},
{"Ct": "Tangshan City ",
"D ":[
{"Dt": "luannan county "},
{"Dt": "leting county "},
{"Dt": "qianxi county "}
]}
]}
]

You are advised to encapsulate them as plug-ins for convenient calling.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
example of simple practical use of interface simple example of abstraction in java simple example of array in c simple example of abstract class in java simple jquery contact form simple jquery text slider
Related Article
Ajax and 302 response code test_javascript-js tutorial

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More