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Programmering med grunderna i JavaScript dbwebb

Define and create a single object, with the keyword new. Define an object constructor, and then create objects of the constructed type. JavaScript ships with a long list of default global objects. These are already defined objects you can call and take advantage of without having to first define them. Global objects are typically used to process or handle data, for example, to transform a date or monetary value into a different internationalized format. Some "surprising" things about JavaScript. Andy Balaam discusses the global object, and how easy it is to pollute it from within a function.

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__filename. The __filename represents the filename of the code being executed. Se hela listan på matthiassommer.it Se hela listan på doc.qt.io Creating a JavaScript Object. With JavaScript, you can define and create your own objects.

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The properties are: Infinity; NaN; undefined; The functions are: decodeURI() decodeURIComponent() encodeURI() encodeURIComponent() eval() isFinite() isNaN() parseFloat() parseInt() These are the objects: Array; Boolean; Date; Function; JSON A JavaScript global variable is declared outside the function or declared with window object. It can be accessed from any function. Let’s see the simple example of global variable in JavaScript.