js province and city three-level linkage code

This time I will bring you the js three-level linkage code of provinces and municipalities. What are theprecautionsfor implementing the three-level linkage code of provinces and municipalities in js. The following is a practical case, let’s take a look.

Preface

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Preparation

The container tags in the page are not limited, just give an id

var address = new Address({ wrapId: 'wrap', showArr: ['provinces','citys','areas'], beforeCreat:function(){ console.log("beforeCreat") }, afterCreat:function(){ console.log('afterCreat'); } })

wrapId:"wrap" // 此处的wrap就是上面容器的id showArr: ['provinces','citys','areas'] // 此处分别代表省、市、区容器的id

For example: If the passed array['provinces','citys','areas']has a length of 3, then there will be provinces and cities, three in the arrayStringare the ids of the province, city, and district containers respectively

such as the passed array['provinces','citys']The length is 2, then the province and city will appear. The two strings in the array are the IDs of the province and city containers respectively

If the array length is 1 I won’t go into details

beforeCreatExecuted before the plug-in is createdCallback function

afterCreatExecuted after the plug-in is created Callback function

Preview

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