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Project requirements: draw a scatter map on the provincial map. The scatter location may not be any city or district or county, that is, any point By querying the official website documents, find a Demo similar to the requirements: https://www.echartsjs.com/gallery/editor.html?c=scatter-map , change the code, and replace the map of China with t ...

BOM (browser object model) provides many objects for accessing browser functions, which are independent of any web page content. window object global scope There is a difference between defining global variables and directly defining attributes on the window object: global variables cannot be deleted through the delete operator, but attribut ...

Preface archive is a tool for cross platform packaging in nodejs You can compress the file to zip or rar format It is a better third-party module install npm install archiver --save archive github address: https://github.com/archiverjs/node-archiver Quick Start // require modules var fs = require('fs'); var archiver = require('archiver'); // ...

golang_real.jpg In fact, I hate to move bricks now, but sometimes I still move bricks. If you don't move, you know you have strength. th-14.jpeg Client code Template file, the following is the client code of form submission, which may not be familiar. No more explanation. <form class="login_form" action="/login" ...

MIME - Multipurpose Internet Mail Extensions, an Internet standard that describes the type of message content. http://www.w3school.com.cn/media/media_mimeref.asp The "content type" we set in the code before is "text/plain" and "text/html". Two different MIME settings. We often use "applicat ...

There are two requirements in the recent project (vue Series). Here is a record to share with you. Polling by native Table list Demand: Do not poll when the number of table lists is small, and only poll when the number exceeds a certain height; Move the mouse in to pause polling, move out to continue polling First, the prototype is as follows ...

Style manipulation module can be used to manage the style, coordinates and dimensions of DOM elements. This section explains style dependency. Style manipulation is implemented through the css method of the jQuery instance, which has many execution methods, as follows: css(obj); when parameter 1 is an object, it means that multiple css styles ...

Window.clipboarddata (only available in IE) It's a good object to use, but only in IE,It took IE ten thousand years to find out that he had a good placeIE is about to quit history. Find something else Compatibility (can I use) brief introduction When the document object is converted to design mode (select, set contentEditable, etc.), the ...

There is a global method getComputedStyle in the DOM standard, which can get the current object style rule information. For example, getComputedStyle(obj,null).paddingLeft can get the left inner margin of the object. However, IE does not support this method. It has its own implementation method, that is, currentStyle, which is ...

Sensation: Taste: plum ribs Cooking time: 20 min Someone asked me why I kept blogging? To quote famous novelist Stephen King, "Start writing!Young people." When you upgrade consumer interest to production interest, you will gradually discover the doors and magic that you didn't see before. Cough, please drink chicken soup when it's c ...