"Allow javascript to run" appears because the current browser prohibits the website's javascript script program. At this time, the user needs to choose to allow javascript to run or disable javascript to run according to the actual situation.
The operating environment of this article: Windows 7 system, JavaScript version 1.8.5, DELL G3 computer.
What does it mean to allow javascript to run?
Javascript is a scripting technology, and this scripting language is generally run in browsers. Basically, various common browsers on the market generally support JavaScript language.
However, some browsers may prohibit their javascript script programs for some special websites. So sometimes the browser may issue a prompt such as "Allow javascript...", then at this time You need to run it or disable it according to the actual situation, because some bad websites may harm your computer or information after running this javascript script.
Introduction to JavaScript:
JavaScript ("JS" for short) is a lightweight, interpreted or just-in-time compiled programming language with function priority. Although it is famous as a scripting language for developing Web pages, it is also used in many non-browser environments. JavaScript is based on prototype programming, a multi-paradigm dynamic scripting language, and supports object-oriented, imperative, declarative, and functional programming paradigm.
JavaScript was first designed and implemented on the Netscape Navigator browser in 1995 by Brendan Eich of Netscape. Because Netscape was working with Sun, Netscape management wanted it to look like Java, hence the name JavaScript. But in fact its grammatical style is closer to Self and Scheme.
The standard of JavaScript is ECMAScript. As of 2012, all browsers fully support ECMAScript 5.1, and older browsers support at least the ECMAScript 3 standard. On June 17, 2015, ECMA International released the sixth edition of ECMAScript, which is officially called ECMAScript 2015, but is often called ECMAScript 6 or ES2015.
[Recommended study: "javascript basic tutorial"]
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