Web Development
Web Development

worth mentioning

... Isaac
schedule2 min read
Web Development

Detailed explanation of the unique ID of the mobile device (mobile phone)

... Angel
schedule5 min read
Web Development

redis combined with php

... Bentley
schedule2 min read
Web Development

phpEnv is an elegant and powerful php integrated development environment

There are many php integrated development environments, such as phpstudy, wamp, xmapp, etc., each with its own advantages and disadvantages. This article is not a detailed comparison and evaluation of the use and debugging of each IDE, because each IDE provides Similar functions, but different in details. The phpStudy package integrates the latest Apache+PHP+MySQL+phpMyAdmin+Zend Loader, one-time installation, and can be used without configuration. It is a very convenient and easy-to-use PHP deb

... Levi
schedule2 min read
Front End Technologies
trending_up Front End Technologies

WecTeam: From the mobile phone scrolling frame loss problem, learn browser synthesis and rendering layer optimization

... Richard
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trending_up Front End Technologies

An article to understand the hidden cryptography in the Web

... Paige
favorite560
trending_up Front End Technologies

WecTeam: With so many codes, do you really understand fonts?

... Luke
favorite306
trending_up Front End Technologies

Tencent CDC team: Front-end abnormal monitoring solution

... Richard
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trending_up Front End Technologies

My 2017 year-end summary

... Wesley
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trending_up Front End Technologies

JS live learning and using regular expressions

... Sydney
favorite1782
Javascript
Javascript

Raspberry Pi Raspberry+ Ultrasonic Module Ranging

Talk is cheak,show me the code!import RPi.GPIO as GPIO import time makerobo_TRIG = 11 # Tring control pin of ultrasonic module makerobo_ECHO = 12 # Ultrasonic module Echo control pin # Ultrasonic module initialization work def makerobo_setup(): GPIO.setmode(GPIO.BOARD) # Use actual physical pins for GPIO port GPIO.setwarnings(False) # Ignore GPIO operation attention warning GPIO.setup(makerobo_TRIG, GPIO.OUT) # Tring is set to output mode GPIO.setup(makerobo_ECHO, GPIO.IN) # Echo is set to input

... Ella
schedule2 min read
Javascript

Computational Geometry in Python

... Eli
schedule40 min read
Javascript

2.2.4 HTML5 Canvas drawing basics

... Emily
schedule2 min read
Javascript

2.2.3 Document Object Model DOM and Form

... Kai
schedule3 min read
Server Side Programming
Server Side Programming

12. Flask-Restful defines the view of Restful. Parameter certification standardization return parameters

Define the view of Restful Installation: pip install flask-restful If you use Flask-restful, then when defining the view function, you must inherit the flask_restful.Resourse class, and then define the corresponding method according to the currently requested method. For example, if the client is expected to use the get method to send a request, then a get method is defined.from flask import Flask from flask_restful import Api,Resource app = Flask(__name__) api = Api(app) #Use Api to b

... Carter
schedule 5 min read
Server Side Programming

11. Flask hook function

     A hook function in Flask is a function that uses a specific decorator. Why is it called a hook function? Because a hook function can insert a piece of code that you want to execute in the normally executed code, then this kind of function is called a hook function.before_first_request: The hook function that will be executed after the Flask project is deployed for the first time.before_request: The request has reached Flask, but it is called before entering the specific view

... Richard
schedule 2 min read
Server Side Programming

10.Flask context

1.1.local thread isolation objectWhen local objects are not usedfrom threading import Thread request = '123' class MyThread(Thread): def run(self): global request request ='abc' print('sub-thread',request) #sub-thread abc mythread = MyThread() mythread.start() mythread.join() print('Main thread',request) #Main thread abcIf you use local objects, they are isolated in each threadfrom threading import Thread from werkzeug.local import Local locals = Local() locals.request = '123' class MyThread(Thr

... Isaiah
schedule 4 min read
Server Side Programming

7. Flask file upload

 1.1. Upload files and access the last fileupload_file_demo.pyfrom flask import Flask,request,render_template import os from werkzeug.utils import secure_filename from flask import send_from_directory app = Flask(__name__) #New images folder, UPLOAD_PATH is the path of images UPLOAD_PATH = os.path.join(os.path.dirname(__file__),'images') @app.route('/upload/',methods=['GET','POST']) def settings(): if request.method =='GET': return render_template('upload.html') else: desc = request.form.ge

... Luis
schedule 2 min read
Server Side Programming

6.Flask-WTForms

 Flask-WTF is a third-party library that simplifies the operation of WTForms. The two main functions of the WTForms form are to verify the validity of the data submitted by the user and to render the template. There are other functions: CSRF protection,File upload, etc. Installation method: pip install flask-wtf1.1. WTForms simple verificationfrom flask import Flask,request,render_template from wtforms import Form,StringField from wtforms.validators import Length,EqualTo app = Flask(__name_

... Alyssa
schedule 2 min read
Server Side Programming

5.Flask-Migrate

1.1. Project structure reconstruction(1) config.pyDB_URI = "mysql+pymysql://root:123456@127.0.0.1:3306/flask_migrate?charset=utf8" SQLALCHEMY_DATABASE_URI = DB_URI(2) Create exts.py (to prevent circular references from reporting errors)from flask_sqlalchemy import SQLAlchemy db = SQLAlchemy()(3) Create models.pyfrom exts import db class User(db.Model): __tablename__ ='user' id = db.Column(db.Integer,primary_key=True,autoincrement=True) username = db.Column(db.String(50),nullable=False)(4) flask_

... George
schedule 1 min read
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