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Valores primitivos y objetos Cuando programamos, es usual invocar funciones y pasar argumentos, sin embargo es posible que no conozcamos el manejo que le da JavaScript a esos parámetros, motivo por el cual a veces obtenemos resultados inesperados. :idea: Primero que todo vamos a aclarar los términos argumetos y parámetros: argumetos hace referencia a los…

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The bestselling JavaScript guide, updated with current features and best practices Beginning JavaScript 5th Edition shows you how to work effectively with JavaScript frameworks, functions, and modern browsers, and teaches more effective coding practices using HTML5. This new edition has been extensively updated to reflect the way JavaScript is most commonly used today, introducing you to the

String Number Operations in JavaScript. In this article you learn the basics of JavaScript and create your first JavaScript program. In this article you learn the basics of JavaScript and create your first JavaScript program. indexOfメソッドは引数と厳密等価演算子（===）で一致する要素があるなら、その要素のインデックスを返し、該当する要素がない場合は-1を返します。 indexOfメソッドは先頭から検索して見つかった要素のインデックスを返します。 I am using Satadip Dutta's search engine script inside an iframe