【2015-02-06】DOM is an abbreviation for Document Object Model. It is a language-independent application program interface for users to manipulate XML and HTML documents. In browsers, it mainly deals with HTML documents. In web applications, XML documents also often need to be retrieved. DOM API is used to access data in documents. John Hevatin once gave a pertinent metaphor in a speech, imagining DOM and JavaScript as islands respectively, they are directly connected by a toll bridge. Every time ECMAScript accesses DOM, it has to pass through this bridge and pay a "bridge fee". The more bridges passed, the more fees paid. Therefore, if you want to reduce costs, you have to cross the bridge less. Here we come to learn how to optimize this problem ...

【2015-02-05】There are four basic data storage locations in JavaScript: literals, variables, array elements, and object members. Like other languages, the storage location of data will greatly affect its reading speed ...

【2015-02-04】Front-end development is no longer the front-end development of a few years ago. It has entered the industrial era from the agricultural era. In recent years, many excellent MVVM frameworks in JavaScript have appeared. Today I compare the advantages and disadvantages of frameworks like Vue, Angular, Avalon ...

【2015-02-03】Managing JavaScript code in browsers is a tricky problem because code execution blocks other browser processes, such as user interface painting. Every time a script tag is encountered, the page must stop and wait for the code to download (if it is an external file) and execute, and then continue to process other parts. Despite this, there are still some ways to reduce the impact of JavaScript on performance ...