26. Global random replacement of user agent browser user agent through downloadidleware Middleware

[Baidu cloud search, search for various materials: http://www.lqkweb.com] [Search online disk, search various materials: http://www.swpan.cn] Introduction to downloadidlewareMiddleware is a framework that can be connected to request / Response processing. This is a very light, low-level system that can change Requests and responses from scratch ...

Posted on Wed, 13 Nov 2019 06:06:56 -0800 by Garion

Using canvas to download pictures to realize browser compatibility

In the project, we need to realize the function of picture download. The first thought is to use the download attribute of a tag. However, when we test it in different browsers, we will find that some browsers are invalid and preview pictures directly after clicking. Therefore, we find another method of picture download compatible with differen ...

Posted on Sat, 02 Nov 2019 21:36:49 -0700 by marsupillami

lxml and pyquery parsing html

lxml First, let's learn about lxml. Many commonly used html parsing libraries use lxml, such as beautiful soup and pyquery. Let's introduce three elements of lxml about html parsing. _Element _Element get from lxml import etree text = ''' <div> <ul> <li class="item-0"><a href="link1.html">first</a>&lt ...

Posted on Mon, 28 Oct 2019 18:55:05 -0700 by kkonline

Here comes Firefox 7. Can you still Hold your upload image preview function?

Original link: http://www.cnblogs.com/weirhp/archive/2011/10/12/Firefox7PreviewImage.html The function of uploading and previewing pictures found on the Internet in the past is not easy to use when tested under firefox. It was originall ...

Posted on Fri, 25 Oct 2019 13:47:04 -0700 by d3web

Problems of IE uploading pictures that cannot be clicked or not displayed

Click image cannot be triggered below IE10 Original code: <td> <label style="display:block;width:100%;height:100%;"> <input name="imgUrl" id="imgUrl" value="${pd.imgUrl}" type="hidden"/> <input id="uploadImg" name="myfile" type="file" οnchange="uploadphoto('uploadImg',' ...

Posted on Thu, 17 Oct 2019 09:44:48 -0700 by Demonic

Using js to translate words in batches, there are lots of translations.

Taoist translation provides api to obtain the translation result of a word, but the result contains only one Chinese meaning, some words have multiple meanings and parts of speech, so try to obtain all translations of a word. I can't write crawlers, so I use js programming to get the translation results ...

Posted on Mon, 07 Oct 2019 21:21:15 -0700 by mniessen

Preview and upload of native operation pictures of webform

1. Input tag is used for image manipulation. Input tag has an accept attribute, which can only be used in conjunction with <input type="file". It specifies the type of file that can be submitted through file upload. Multiple attribute values are separated by commas <input accept="audio/*, video/*, image/*">.   ...

Posted on Fri, 04 Oct 2019 08:33:53 -0700 by jonez

element-ui dialog box can be dragged and bounded

Links to the original text: https://segmentfault.com/a/1190000016040327   In response to business needs, we need to implement the drag-and-drop problem of dialog boxes, and element-ui does not provide official support. So we refer to Da ...

Posted on Wed, 02 Oct 2019 03:05:46 -0700 by hellangel

linux Installation browser and driver

linux Installation browser and driver 1. Firefox Browser and Driver-centos6 64 Firefox Browser - Comes with CentOS 6.10, and the browser version is 52 Download the corresponding Firefox driver, version 52 - version 0.17- View Address Add to ...

Posted on Wed, 04 Sep 2019 19:48:27 -0700 by xSN1PERxEL1TEx

Python Grabs Stock Data of Securities Star

Links to the original text: https://www.jianshu.com/p/85d52ecfb529 Data acquisition is an indispensable part of data analysis, and web crawler is one of the important channels for data acquisition. In view of this, I picked up Python as a sh ...

Posted on Mon, 19 Aug 2019 00:58:37 -0700 by Grunge