The components you want to provide contain a reusable slot that can get data from the sub components.
It is hoped that each independent item will render something different. This is also the application of scope slot.
todo-listComponents:
<ul> <li v-for="todo in todos" v-bind:key="todo.id" > {{ todo.text }} </li></ul>
To make this feature possible, all you need to do is wrap the to-do items in one<slot> Element and then pass all the data related to its context to this slot:
In this case, the data istodo Object:
<ul> <li v-for="todo in t...
This blog is a basic knowledge of python, most of which are based on personal opinions from various sources. We welcome to learn together, supplement our knowledge and correct our mistakes.
PythonFoundation [directory]
PythonFoundation [first]: introduction and installation of Python
PythonFoundation [Second]: Python appetizers
PythonFoundation [Third articles]: variables and operators
PythonFoundation [Fourth articles]: basic data type (numeric type)
PythonFoundation [Fifth articles]: basic data type (character type)
PythonFoundation [sixth articles]: basic data type (list)
PythonFoundation...
PS: ErlangItself is the bottom language of the router, and its latency is relatively low.
PS: AMQPHe is a norm, the same as the JMS specification.Publishers don't have to worry about which channel they don't want to send, and exchange processes; consumers just need to get it
variable
Variable type
Variables can specify different data types, which can store integers, decimal or characters.
2.Variable assignment
Each variable must be assigned before it is used, and the variable will be created after assignment.
An equal sign (=) is used to assign variables.
The equality sign (=) operator has a variable name on the left, and the equality sign (=) operator has a value stored in the variable on the right. For example:
1 # autor:guangqing xu
2 counter =100 #Assigned integer variables
3 miles = 1000.0 #float
4 name = "guangqing" #Character
5 print(cou...
One, XML data in one format is converted to object.
pom.xmlIntroduce
<!--javaBeanBidirectional conversion of XML and -->< dependency>< groupId> com.thoughtworks.xstream< /groupId>≪ artifactId> xstream< /artifactId>< version>1.4.10</version>
</dependency>
xmlFile template
<?xml version="1.0" encoding="GBK"?>
<MESSAGE>
<MESSAGEHEAD>
<MESSAGEID/>
<SRC/>
</MESSAGEHEAD>
<MESSAGEBODY>
<TRANLIST>
<TRAN_DATE/>
<TRAN_TIME/>
...
In Vue framework development projects, components are often used to manage different functions, and some common components are extracted. There must be some doubts and needs at this time. For example, if one component calls another component as its own subcomponent, how do we pass values to the subcomponentWhat? If it is the development of e-commerce website system, will also involve shopping cart options, this time will involve non-parent component value transfer. Of course, you can also use the Vuex state management tool to implement this part, which we will introduce later. Let me first in...
Tree Degree
xThe degree is the number of children in the X node.
First order traversal: 1-> 2-> 4-> 5-> 3-> 6-> 7
In fact, it is very similar to deep search.
Sequential traversal: 4-> 2-> 5-> 1-> 6-> 3-> 7
Post ordinal traversal: 4-> 5-> 2-> 6-> 7-> 3-> 1
html：
<ul class="code_ul">
</ul>
css:
.code_ul>li{
color: #00a28c6c;
display: -webkit-flex;
height: .4rem;
line-height: .4rem;
font-weight: 600;
font-size: .14rem;
align-items: center;
}
.code_ul>li .button{
flex: 1;
width: .6rem;
color: #fff;
background: #ff6c72;
border:none;
border-radius: 20px;
text-align: center;
margin-left:.3rem;
}
js：
Here is the addition of dynamic data.
1 if (res.code == 1) {
2 res.data.forEach(function (element, ind) {
3 ...
