What day of the week is a better choice for the fund?[python statistical analysis] - know

A common way of fixed investment of a fund is to apply for a fixed share of the fund from the fund company during a fixed period of time each week or month.Fund fixed investment can average costs, spread risks and achieve automatic investment, so fund fixed investment is also called "lazy investment technique".Today, we mainly use ...

Posted by poknam on Fri, 20 Mar 2020 13:33:49 -0700

Solve the problem that ajax can't move forward, backward or refresh

Solve the problem that ajax can't move forward, backward or refresh Scenario Description: At present, the front and back end basically realize the interaction of front and back interface data through ajax, but ajax has a small disadvantage, that is, it does not support the browser "back" and ...

Posted by Chris-the dude on Sun, 15 Mar 2020 20:09:04 -0700

Can key events be simulated by programming?

Can key events be simulated programmatically in JavaScript? #1 building Non jquery versions that can be used in both webkit and gecko: var keyboardEvent = document.createEvent("KeyboardEvent"); var initMethod = typeof keyboardEvent.initKeyboardEvent !== 'undefined' ? "initKeyboardEvent" : "initKeyEvent"; keyboardEvent[initMethod]( "k ...

Posted by swamp on Mon, 02 Mar 2020 23:15:41 -0800

The use of echarts report technology

1, Introduction to echarts It is an open-source visualization library implemented by JavaScript, which can run smoothly on PC and mobile devices, and is compatible with most current browsers (IE8/9/10/11, Chrome, Firefox, Safari, etc.), the bottom layer relies on vector graphics library ZRender, providi ...

Posted by installer69 on Wed, 26 Feb 2020 19:22:28 -0800

css animation - 3D effect

css animation - 3D effect 1, 3D conversion 3D flip method rotate 3D displacement translate 3D sight distance perspective 3D conversion (3D scale flip) scaleZ 2, 3D animation Create animation @ keyframes Animation attribute animation case Internet Explorer 10 and Firefox support 3D, Chrome and ...

Posted by tim_perrett on Mon, 24 Feb 2020 07:03:16 -0800

javascript brief demo understanding, object, BOM

Document is a javascript built-in object that represents the document part of the browser document.write("Hello Javascript"); writes a string to the document <html> <body> </body> <script> document.write("Hello Javascript"); </script> </html> This is a si ...

Posted by compsci on Sun, 23 Feb 2020 22:24:32 -0800

Summary: How to modify default styles for beautifying radio, checkbox, select

Now that front-end pages are becoming more and more effective, the default input component style obviously does not meet the design requirements.A few years ago, development projects happened to meet the related requirements, and in this particular collation, modify the methods of radio, CheckBox, style. Principle: The general principle i ...

Posted by xX_SuperCrazy_Xx on Thu, 20 Feb 2020 09:22:59 -0800

Shocked, Python cracked the BiliBili slider verification code to avoid human-computer identification perfectly

Python cracking BiliBili slider verification code |Perfect is impossible, add a shock! Python breaks the BiliBili slider verification code, avoiding human-computer identification perfectly. It can have Preparation Landing page of station B https://passport.bilibili.com/login python3 pip install sel ...

Posted by gunslinger008 on Sun, 16 Feb 2020 04:38:11 -0800

md5sum and random number creation in shell programming

1. What is md5sum MD5 full name is message digest algorithm. This algorithm calculates information of any length bit by bit, and generates a "fingerprint" (or "message digest") with a binary length of 128 bits (hex length is 32 bits). The possibility of different files generating t ...

Posted by damo87 on Sat, 15 Feb 2020 21:09:27 -0800

Automatic test model of learning notes

Modular instance The code is shown as follows in mailbox 126: from selenium import webdriver driver = webdriver.Firefox() driver.implicitly_wait(10) driver.get("http://www.126.com") #Land driver.find_element_by_link_text("Password login").click() #Find the frame layer where the user name and password ...

Posted by Abz on Sat, 08 Feb 2020 02:30:52 -0800