Javascript implements code sharing for provincial and municipal linkage

The content of this article is about the code sharing of javascript to achieve provincial and municipal linkage. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Preface: This series is mainly a summary of some small demos that I have used to learn JavaScript implementation. I always feel that I can’t just forget about it after learning it like this. Let’s summarize it during the holidays.

In ordinary website development, we often encounter such a requirement: when registering on the page or completing personal information, you must select your personal location. When you select a province, the corresponding city in that province will also be automatically updated. .

Technical point analysis:

DOM operation: Obtain the DOM object that needs to be operated

Array Array: Store the city data corresponding to a certain province

Element operations: appendChild(), createElement()

The code is as follows:

HTML code:

					--请选择--
					湖北
					湖南
					河北
					河南
				
				
									
				

JS code:

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