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A JavaScript engine is a software component that executes JavaScript code. The first JavaScript engines were mere interpreters, but all relevant modern engines use just-in-time compilation for improved performance. [52] JavaScript engines are typically developed by web browser vendors, and every major browser has one.
EJS was first published in February 2011 by Matthew Eernisse, also known as mde on GitHub. Eernisse designed EJS to be a simple, light, fast and flexible templating engine for Node.js, [citation needed] and it allows developers to embed JavaScript logic directly into HTML. [3] EJS is licensed under the Apache License, version 2.0.
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However, a language wishing to index arrays from 1 could adopt the convention that every array address is represented by a′ = a – s; that is, rather than using the address of the first array element, such a language would use the address of a fictitious element located immediately before the first actual element. The indexing expression for ...
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first – the index of the first element in the slice; last – the index of the last element in the slice; end – one more than the index of last element in the slice; len – the length of the slice (= end - first) step – the number of array elements in each (default 1)
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The syntax of JavaScript is the set of rules that define a correctly structured JavaScript program. The examples below make use of the log function of the console object present in most browsers for standard text output .