How do parent-child classes pass values

Posted by feri_soft on Mon, 28 Feb 2022 03:29:47 +0100

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Please do not paste the screenshot of the code related to the problem

Parent button

<el-form-item label="Application Administrator" prop="aplMgt">
          <el-input v-model.trim="form.aplMgt" placeholder="Please enter the application administrator" style="width: 200px!important;"  readonly/>

          >Select user</el-button>

Subclass form

<el-table v-loading="loading" :data="userList" >
      <el-table-column type="selection" width="50" align="center" />
      <el-table-column label="User number" align="center" key="userId" prop="userId"  />
      <el-table-column label="Login account" align="center" key="userName" prop="userName" v-if="columns[1].visible" :show-overflow-tooltip="true" />
      <el-table-column label="User nickname" align="center" key="nickName" prop="nickName" v-if="columns[2].visible" :show-overflow-tooltip="true" />
      <el-table-column label="department" align="center" key="deptName" prop="dept.deptName" v-if="columns[3].visible" :show-overflow-tooltip="true" />
      <el-table-column label="phone number" align="center" key="phonenumber" prop="phonenumber" v-if="columns[4].visible" width="120" />
      <el-table-column label="state" align="center" key="status" v-if="columns[5].visible">
        <template slot-scope="scope">
            :disabled="accessLevel == 1"
      <el-table-column label="Creation time" align="center" prop="createTime" v-if="columns[6].visible" width="160">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>

submitForm() {


###### Operation results and error reporting contents 

###### My solution ideas and tried methods 
Previously, I checked on the Internet to transfer data from the subclass to the parent class $emit This component, but I don't know how to write it. A general idea is to bind a listener after clicking the select user button. If the subclass page is selected and click OK, pass the value of the current line to me, the parent page
###### What I want to achieve

Click a line on the subclass page, and the box of the application administrator on the parent page displays the user nickname button, but it is the user in the background id Value of
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 [^1]: [mermaid Syntax description](

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revoke:<kbd>Ctrl/Command</kbd> + <kbd>Z</kbd>
Redo:<kbd>Ctrl/Command</kbd> + <kbd>Y</kbd>
Bold:<kbd>Ctrl/Command</kbd> + <kbd>B</kbd>
Italics:<kbd>Ctrl/Command</kbd> + <kbd>I</kbd>
title:<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>H</kbd>
Unordered list:<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>U</kbd>
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Insert code:<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>K</kbd>
Insert link:<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>L</kbd>
Insert picture:<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>G</kbd>
Find:<kbd>Ctrl/Command</kbd> + <kbd>F</kbd>
Replace:<kbd>Ctrl/Command</kbd> + <kbd>G</kbd>

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Direct input once<kbd>#< / KBD > and press < KBD > space < / KBD > to generate a level 1 title.
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*Emphasis text* _Emphasis text_

**Bold text** __Bold text__

==Tag text==

~~Delete text~~

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H~2~O is It's liquid.

2^10^ The result is 1024.

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link: [link](

picture: ![Alt](

Picture with size: ![Alt]( =30x30)

Centered picture: ![Alt](

Centered and sized picture: ![Alt]( =30x30)

Of course, in order to make users more convenient, we have added the image drag function.

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go[Blog settings]( page, select a code slice highlighting style you like, and the same highlighted 'code slice' is shown below
// An highlighted block
var foo = 'bar';

Generate a list that suits you

  • project
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      • project
  1. Item 1
  2. Item 2
  3. Item 3
  • Plan task
  • Complete the task

Create a table

A simple table is created as follows:

mobile phone$12

The setting content is centered, left and right

Use: ---------: Center
Use: --------- left
Usage -----------: right

First columnSecond columnThird column
First column text centeredThe text in the second column is on the rightThe text in the third column is left


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Single backticks'Isn't this fun?''Isn't this fun?'
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Create a custom list

Markdown Text-to- HTML conversion tool Authors John Luke

How to create a footnote

A text with footnotes. 1

Comments are also essential

Markdown converts text to HTML.

KaTeX mathematical formula

You can render LaTeX mathematical expressions using KaTeX:

Gamma formula display Γ ( n ) = ( n − 1 ) ! ∀ n ∈ N \Gamma(n) = (n-1)!\quad\forall n\in\mathbb N Γ (n)=(n−1)! ∀ N ∈ N is through Euler integral

Γ ( z ) = ∫ 0 ∞ t z − 1 e − t d t   . \Gamma(z) = \int_0^\infty t^{z-1}e^{-t}dt\,. Γ(z)=∫0∞​tz−1e−tdt.

You can find more information about LaTeX mathematical expressions here.

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UML diagram

UML diagrams can be used for rendering. Mermaid For example, a sequence diagram is generated as follows:

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We will still support the flowchart of flowchart:

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Export and import


If you want to try this editor, you can edit it at will in this article. When you have finished writing an article, find the article export in the upper toolbar and generate one md file or html file for local saving.


If you want to load an article you have written md file, you can select the import function in the upper toolbar to import the file with the corresponding extension,
Continue your creation.

  1. Explanation of footnotes ↩︎

Topics: Javascript Front-end