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In a previous project, there is a gold coin attribute. When you want to add gold coins, you need to scroll like a slot machine, find the information on the Internet, summarize it, and share it with you. Let's start with the picture (git doesn't work, let's imagine) Usage method 1. Create attrs.xml file under res/values to c ...

<template> <div> <quilleditor v-model="content" ref="myTextEditor" :options="editorOption" @change="onChange" > <div id="toolbar" slot="toolbar"> <select class="ql-size"> <option value="small">&l ...

Introduction: Android Support Annotations is an annotation library introduced from version 19.1, which can optimize code, increase readability, and reduce code error reporting Use: 1: boot pack implementation 'com.android.support:support-annotations:23.4.0' 2:Support Annotations classification 2.1:Nullness annotation @ ...

1, Defining parameters 1. There are two types of function parameters: formal parameter and actual parameter. A formal parameter is a variable declared by a function. It is only visible inside the function. An actual parameter is the parameter value actually passed. //[example 1] the following code defines a simple function. f ...

File upload In order to upload the file successfully, you need to set the method attribute of the form to POST and the enctype to multipart / form data. Once it is set to multipart / form data, the browser will process the form data in binary. spring cannot process the file upload by default. You need to configure the MulipartResolver in the sp ...

1. Difference between. each()] and. each()] and (). each() $. each is used to traverse array, object, array object, code form (arr,function(index,value)) or (obj, function(key, value) {}) (). each is used to traverse dom. The code form is (). each is used to traverse dom. The code form is ('li '). each (function() {var XXX = ...

When writing the front-end page, sometimes one or more lines of input boxes are added or reduced dynamically according to the business requirements. I saw that other people's writing is too complex before. I'll give you my simplified one for reference. To achieve the effect, click Add to add a new line of input box at the bott ...

1, Add background to chart Add an outer div to the chart to set the background for this outer Div html: <!--html--> <div class="setimg"> <div echarts [options]="rightOption4" class='demo-chart'></div> </div> css: .setimg { width: 100px; height: 100px; margi ...

Elements of inline or inline-* are vertically centeredThe properties padding, line-height, vertical-align can be used.There are two specific scenarios: One line vertically centered, such as a single line of text or a link In this case, vertical centering can be achieved by adding a padding value of the same size above and below the element. ...

UIImageView introduction UIImageView is a container for placing pictures. In the development of app, if you want to show pictures, you need to use UIImageView as a control. Here's how to use UIImageView creation UIImageView and UILabel are inherited from UIView, so the creation of UIImageView is the same as UIView. ...