How to implement multi-level menu in mini program

How to implement multi-level menu in mini program

简单 2019-09-19 19:29:45 0  0  1242

Please tell me how to write this multi-level linkage code?

I am a novice and couldn't find the code for this kind of multi-level linkage on the Internet, so I had to come to the program for help. The program is zblog and the imperial cms page needs to have this kind of multi-level linkage from Taobao. Multi-level linkage needs to have 1, 2, and 3 in the pic...

赵泽鑫 2022-01-25 22:54:25 0  2  1108

angular.js - How to use angular to implement three-level linkage of an array

The array looks like this. I want to use Angular to realize the three-level linkage of provinces and cities. The current code looks like this, and the result cannot be realized. Can't get city

phpcn_u1582 2017-06-05 11:09:42 0  2  743

Column Infinity, classification, if it is three levels, if you delete the first level, the third level cannot be deleted.

Column Infinity, classification, if it is three levels, if you delete the first level, the third level cannot be deleted.

在路上 2018-07-08 05:23:38 0  1  1372

phpAdmin报错：Fatal error: Cannot 'break' 2 levels in F:\phpStudy\PHPTutorial\WWW\phpMyAdmin\export.php on line 590

phpadmin gets an error when exporting: Fatal error: Cannot 'break' 2 levels in F:\phpStudy\PHPTutorial\WWW\phpMyAdmin\export.php on line 590 What is the problem?

phpcn_u74802 2017-12-12 17:38:55 0  1  2918

Design Pattern - Can the BLL in the three-tier architecture only interact with the MVC Controller?

The presentation layer in the three-tier architecture uses MVC, so can the interface in the business logic layer not be directly called from the outside? Instead, it should interact with the business logic layer through the Controller in MVC, and only the Controller in the presentation layer can be ...

为情所困 2017-05-16 17:05:49 0  2  808

Select woocommerce related products using custom taxonomy with 3 level hierarchy

I have a woocommerce store with a custom classification of "Sports". The classification has three levels - parent, child, child - for example: Indoor Sports > Arena Sports > Basketball. If the user views a basketball item, then I want the related products to show other basketball ite...

P粉037215587 2024-04-06 20:05:30 0  1  816

jQuery three-level drop-down

Hello teacher, after I finished writing, my phone became stuck while sliding. What’s going on?

Time 2018-11-27 18:06:00 0  4  1161

Make drop-down menu multi-level

I have a dropdown menu that looks like this: .dropdown{display:inline-block;position:relative;}.dropdownbutton>a{display:block;color:#000000;text-decoration:none;}.dropdown-content{ display:none;position:absolute;width:auto;overf

P粉107772015 2024-01-10 18:02:08 0  2  450

javascript - Three-level linkage select

How to use the idea of ​​two-way data binding to achieve this?

phpcn_u1582 2017-05-18 10:51:30 0  5  851

How to achieve three-level linkage

I now need a registration system. There are two tables now, the unit table and the position table. The position code in the position table is unique. The function I need to implement is that when a unit is selected, the units corresponding to the unit will be automatically filtered out. All the job ...

为梦兼程 2019-05-16 16:11:41 0  3  1256

python merge dict

Now there are two dicts. This dict has two levels (it would be better if the number of levels can be customized or not limited). I want to merge them together. Case1: Input: a: {1: {"171": True}} b: {1: {"172": False}} Output: {1: {"171": True, "172": False}} ...

阿神 2017-06-22 11:52:21 0  2  975

About setting error levels

$dsn = "mysql:host=localhost;dbname=lamp25;charset=utf8"; $pdo = new PDO($dsn, 'root', '123'); //Set the error level $pdo->setAttribute(3, 2); What are 3 and 2 in the previous paragraph? Can you tell me in detail? The manual seems to be in English. . . .

我只是一条咸鱼哈 2017-09-05 22:53:04 0  1  1088

Delete multi-level classification problems

The content taught by the teacher can only delete the category and subcategories, but the subcategories of the subcategories cannot be deleted.

Tranquil Eternal 2019-07-18 21:49:22 0  1  1121

mysql - sql How to query the third-level subset based on the parent id?

Now there is a need to query the third-level subset database based on fid. A table has three fields (id, name, fid) id name fid1 01 02 02 13 03 24 04 35 05 36 06 47 07 6....... ........ Now how to query the content of the next three levels based on ID, for example, check the sub-aggregation of the n...

PHPz 2017-05-18 10:51:03 0  2  908

How many levels of cyclic arrays can php handle?

It is a foreach nested inside a foreach. I tried the third layer but it didn’t work. It’s so slow. How do the masters handle this situation?

代码输入中... 2017-08-21 17:40:32 0  2  1653

html5 - optgroup cannot meet the needs

Display the tree structure data of class diagram 1 in the form of a drop-down box in figure 2. It seems that optgroup cannot satisfy the requirement of more than two levels.

迷茫 2017-07-05 10:45:59 0  1  1102

php - How to realize three-level classification display output?

{code...}

習慣沉默 2017-05-17 09:55:55 0  4  884

Memory leak occurs when changing the value indicating an index in a computed property

I have a problem with the computed property correctAnswersForCurrentStage():object{returnreturnthis.correctAnswers[this.currentLevel]??{};}, some background: this.CorrectAnswers is an object where the properties are the levels and the values ​​are objects for each gate: this.correctAnswers={"1&...

P粉786432579 2023-09-10 15:52:53 0  1  611

javascript - Adding multiple levels of brackets to convert JSON format

{code...} needs to be changed to {code...}

曾经蜡笔没有小新 2017-05-19 10:47:32 0  1  651