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Javascript is an interpreted scripting language that can be dynamically parsed and executed by the browser. JavaScript itself can be directly recognized by the browser. The JavaScript interpreter is called the JavaScript engine and is a default part of the browser.
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
JavaScript is an interpreted scripting language. It is different from compiled languages such as Java or C#. It does not need to be compiled into a language recognized by the browser, but is dynamically parsed and executed by the browser. (The browser itself can recognize it directly. The JavaScript interpreter is called the JavaScript engine and is a default part of the browser)
Let me introduce to you the JavaScript parsing process. To understand the parsing process of JavaScript, first understand a few concepts.
1. Code block
The code block in JavaScript refers to the code segment separated by the