Copy Code code as follows:
Two-level linkage selection
China Three-level administrative unit linkage
Province:
City (district):
The effect chart is as follows:
This example describes a JavaScript object that contains a Chinese city. Share to everyone for your reference. Specifically as follows:
A variety of bitter and boring needs:
city2num[' Beijing ']=010num2city[' 010 ']= Beijing
Copy Code
This article mainly introduces how to implement provincial/municipal Linkage Based on jquery. If you are interested, you can refer to implementation of a provincial/municipal Linkage Based on the project requirements. Due to special business requirements, it is slightly inconvenient to use the existing plug-in.
First, you need to save the JS data file of the region data. Here I name it areaData. js. The content is as follows:
/*** Save region information * data format * areaData = [{'pro': 'b
%, the countryside is 0, 56%. Among them, the 50 's, the town is about 0, 55%, the rural area is about 0, 65%, the 60 's, the town is about 0, 35%, the rural area is about 0, 65%, 70, the town is about 0, 25%, the rural area is about 0, 5%, the late 70 and the early 80, the town is about 0, 15%,2, population urbanization is beneficial to the optimization of population mortality. According to the incomplete statistics for 30 years from 1954 to 1984, the average population mortality rate of our co
Because the project needs to implement a provincial and municipal linkage, because the business has some special needs, using the existing plug-in slightly inconvenient, I realized a. First need to save the area data JS data file, I named Areadata.js here, the content is as follows: /** * Save Region Information * Data format * Areadata = [{' Pro ': ' Beijing ', ' cities ': ' {'-1 ': ' Beijing '}}, {...}] * The municipality exists-1, which means the m
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Civilization is also getting tired of some experience now. Due to the lack of skill, you can only provide some basic skills in the foundation, and hope to improve your skills. Please do not correct them.1. City ride:The urban immigration rules should already be familiar. When a city is built, it produces four cities (three cities and one population ). However, the city it
very easy to use; just add 2 lines to the top of your program:Import psycoPsyco. full ()It is an experimental project. the documentation warns that map and lambda perform poorly, and that list comprehensions (often a reasonable substitute) shocould be used instead. the original developer has moved on to work on the PyPy project; I shoshould investigate that later.
Compared to other tested versions the performance of uncompiled Python is average; with Psyco compilation it is surprisingly good.
S
The following small series will bring you a JavaScript: Comprehensive Analysis of the Array type. I think it is quite good. Now I will share it with you and give you a reference. Let's take a look at the array types in JavaScript with arrays in other languages.
Each item in JavaScript can save any type of data.In addition
The size can be dynamically adjusted. It can automatically increase as data is added to accommodate new data..
There are two basic methods to create an array.
1. Array Constru
How many primary school students have become the trend of the property market? Industry Review No. 1 financial daily [Weibo] Lin Xiaozhao I want to share 1
According to an analysis, the number of primary school students in a city is growing rapidly and house prices are also strong. However, our reporter found that the two are not completely related and the industrial structure is also a reference.
Lin Xiaozhao
Which cities are more worth investing in?
The array type in JavaScript differs greatly from an array in other languages. each item in JavaScript can hold any type of data. also, the size of the JavaScript array can be dynamically adjusted and can grow automatically as the data is added to accommodate the new data .
There are two basic forms of creating an array.
1.Array Constructors
var cities = new Array ();
If you know in advance the number of items you want to save, you can
sorted.
In the following example, only the ProvinceName is sorted in ascending order:
var provinces = ctx.Provinces .OrderByDescending(p => p.ProvinceNo) .OrderBy(p => p.ProvinceName);
2>. Filter by using LINQ
Filter by using a LINQ expression:
using (var ctx = new PortalContext()){ var cities = from c in ctx.Cities where c.ProvinceID == 3 select c; foreach (var city in
that family [0: 2], but the actual operation will find that only "white" and "little white mom" can be output at this time, because the rule for selecting the subscript of list is "ignore head and tail ", therefore, only family [0: 3] or family [0:] can output all elements.
How can we find Tom in new_family? The answer is new_family [0] [0].When nesting multiple layers, remember not to worry. It is easy to retrieve them one layer at a time..
③ The following describes some common list operations
PostgreSQL implements table inheritance, a feature that is an effective tool for database designers. The SQL99 and later standards define the type inheritance characteristics, which are different from the many features we describe here.Let's start with an example: Let's say we're trying to make a city data model. There are many cities in each state, but there is only one capital city. We want to be able to quickly retrieve the capitals of any state. T
specialized education is 7624.96 yuan, and the average monthly salary of developers with a Bachelor degree or above is 8230.11 yuan.
The salary gap between developers in tier 1 and tier 2 cities is getting smaller and smaller. Among the 1000 developers, the average monthly salary of first-tier cities is 8245.93 yuan, and that of second-tier cities is 7685.71 y
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Description
In a distant country, one side is a beautiful lake with great scenery, and the other side is a desert without any limitations. The country's administrative divisions are very special. They form a rectangle with N rows and M columns, as shown in. Each grid represents a city and each city has an altitude. Water conservancy facilities are now needed in some cities to allow residents t
Game Map
Time limit: 1 Sec memory limit: MBSubmitted by: 138 resolution: 60Submitted State [Discussion Version] [Propositional person:Admin]
The title describes the Icpc-world is the most popular RPG game for ACM-ICPC contestants, whose objective are to conquer the world. A Map of the game consists of several cities. There is at the most one road between a pair of cities. Every road is bidirectiona
the demo, our blog today is to generate Pickerview data, and to the bottom of this pickerview encapsulation. It is easy to see from the animation below that the second column automatically shows all the prefecture-level cities that are saved after the first column is selected. When clicked, the corresponding label in the above will show you all the provinces and cities and the corresponding numbers. Please
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