Yesterday I was thinking of encapsulating the three-level linkage menu as a function. As a result, I was busy yesterday, so I had to come today.
It was the three-tier linkage menu bar that I wrote two days ago, but changed it to the form of a JS function call. The click event is not added to the function, and the jump page event is also implemented in the a tag.
Think about adding complexity on the basis of this weekend.
Simply implement a three-level linkage menu bar, with pure CSS can be achieved, in order to increase reusability, it is packaged into components, when the time comes, you can...
Use of internal widgets
” inherit “forms.Form
Basic Edition
Specifies the type of control only.
> attribute
widget
attrs={
‘html attribute’：’Attribute value
}
）
)
The following example is just a simple use of widgets, and no real validation is done.
widget.html
1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>Demonstration of widgets</title>
6 </head>
7 <body>
8 <form action="/13_widget/" method="post">
9 {% csrf_token %}
10 {{ form.as_p }}
11 ...
2011-02-15 02:13:09
The gaunt freedom in the mirror
Empty empty shell only.
The eyes of inanimate domination.
Extinguishing the beauty of spring
I want to shout, shout, wake up from the Millennium dream.
The creation of life also cares about feelings.
A voice wants to come from far away.
Tell the lovely and future expectations of life.
Through the dim corridor
Self confusing, no one feels the world of people.
Far away, leaving only endless envied and longing.
Love. Is it always there?
Where
I asked the cold rain in the lonely night.
In the rain, I want to return to the homeless fami...
First edition
Second Edition
Third Edition
#!/bin/bash
set -o nounset
declare -A dic
#This script is used for backup logs to oss!
#Time 2017/11/12
#Author guoyunlong gongxiaopo
###############Warning#################################
# The path to the required migration log server is:/root/yunwei/ #
# We need to configure this machine root to Xitong users of the log server.It only needs to be modified: [backup log path]="Number of days retained" #
# Backup log:/app/logs/yunwei/qianyi.log #
# The script can be executed before or after 5 o'clock every day, 14 days later.It is ver...
a = [i for i in range(1,18) if iConditions
python2There may be memory problems, which have been resolved in python3.
d = [(i,j) for i in range(3) for j in range(2)]
Be equal to
d = []
for i in range(3):
for j in range(2):
d.append(i,j)
I. Introduction of ORM
Mapping relations:
Name of table
Attributes of fields
Table record – — class instantiated object
ORMThe two major functions are:
Operating table:
- Create a table
- Modified table
- Delete table
Operation data row:
- crud
ORMLink database with pymysql third party tools
DjangoThere is no way to help us create the database. We can only tell it after we have created it, and let Django link it.
Two. Preparation before creating the table.
First, create your own database.
Two, configure ...
js get the maximum value of the array minimum max, min
Click to view the content of the article.
Array sorting to get the first and last minimum values.
MathThe function is Math.min (), Math.max (), and the array length is too long. Maximum call stack size exceeded
Traverse the array, define the variable a equal to the first value, traverse the array with each element, each time the maximum assignment to a; traverse the completion of a is the maximum value. The minimum value is the same.
