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  2. Undefined variable - Wikipedia

    en.wikipedia.org/wiki/Undefined_variable

    An undefined variable in the source code of a computer program is a variable that is accessed in the code but has not been declared by that code. [1] In some programming languages, an implicit declaration is provided the first time such a variable is encountered at compile time. In other languages such a usage is considered to be sufficiently ...

  3. JavaScript syntax - Wikipedia

    en.wikipedia.org/wiki/JavaScript_syntax

    var x1 = 0; // A global variable, because it is not in any function let x2 = 0; // Also global, this time because it is not in any block function f {var z = 'foxes', r = 'birds'; // 2 local variables m = 'fish'; // global, because it wasn't declared anywhere before function child {var r = 'monkeys'; // This variable is local and does not affect the "birds" r of the parent function. z ...

  4. JavaScript - Wikipedia

    en.wikipedia.org/wiki/JavaScript

    This is an accepted version of this page This is the latest accepted revision, reviewed on 15 December 2024. High-level programming language Not to be confused with Java (programming language), Javanese script, or ECMAScript. JavaScript Screenshot of JavaScript source code Paradigm Multi-paradigm: event-driven, functional, imperative, procedural, object-oriented Designed by Brendan Eich of ...

  5. Array (data structure) - Wikipedia

    en.wikipedia.org/wiki/Array_(data_structure)

    Indexes are also called subscripts. An index maps the array value to a stored object. There are three ways in which the elements of an array can be indexed: 0 (zero-based indexing) The first element of the array is indexed by subscript of 0. [8] 1 (one-based indexing) The first element of the array is indexed by subscript of 1. n (n-based indexing)

  6. jQuery - Wikipedia

    en.wikipedia.org/wiki/JQuery

    In 2018, jQuery was used on 78% of the top 1 million websites. [19] In 2019, jQuery was used on 80% of the top 1 million websites (according to BuiltWith), [19] and 74.1% of the top 10 million (per W3Techs). [6] In 2021, jQuery was used on 77.8% of the top 10 million websites (according to W3Techs). [20]

  7. 5 Items From the 1970s That Are Worth a Lot of Money - AOL

    www.aol.com/finance/5-items-1970s-worth-lot...

    Discover More: 8 Rare Coins Worth Thousands That Are Highly Coveted by Coin Collectors. If you are a collector, saver or even accidental hoarder of your old belongings, you could be sitting on a ...

  8. Rams hold off Bills, who take huge step back in race with ...

    www.aol.com/sports/rams-hold-off-bills-huge...

    Chiefs increase lead for No. 1 seed. The Chiefs create a lot of their own luck, but they have caught breaks this season. They've been living right in close games, winning each game they've been in ...

  9. Black Friday shoppers spent a record $10.8 billion online ...

    www.aol.com/news/black-friday-online-sales-track...

    Black Friday online shopping this year set a new high, reaching $10.8 billion in sales, according to Adobe Analytics, which tracks U.S. e-commerce data. The record pace of Black Friday buying ...