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HTMLCollection: HtmlCollection is a collection of HTML elements from DOM. it is access by the name,id or index number. It use getElementByClassName, getElemenrtByTagName in NodeList. It uses three Methods: HTMLCollection Item() Method HTMLCollection length() Method HTMLCollection namedItem() Method Html Collection Item(): it returns specificed index value for the element in an HTMLCollection. An HTMLCollection object is an array-like list of HTML elements. Methods like the getElementsByTagName () returns an HTMLCollection. Se hela listan på developer.mozilla.org
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Definition and Usage.
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HTMLCollection vs NodeList, as of 2019-05-30. Both not true array. But one inherit forEach. Both inherit Symbol.iterator (so is iterable) // print info of a object, see if they are true array, or iterable. HTMLCollection은 틀이긴 하나, HTMLCollection 자체가 바뀌는 것은 아니고, lis 라는 변수가 HTMLCollection라는 녀석의 틀을 가지게 된 것이라고 생각하시면 될 듯합니다.
Both inherit Symbol.iterator (so is iterable) // print info of a object, see if they are true array, or iterable. Both NodeList and HTMLCollection are collections and they might look like an Array and even possess some properties and methods inherent to arrays, they’re still not actual arrays. This means if you’re willing to use Array methods on your NodeList s and HTMLCollection s then you’ll need to convert them into an actual Array. DOM HTMLCollection HTMLCollection 是 HTML 元素的集合。 HTMLCollection 对象类似一个包含 HTML 元素的数组列表。 getElementsByTagName() 方法返回的就是一个 HTMLCollection 对象。 HTMLCollection은 틀이긴 하나, HTMLCollection 자체가 바뀌는 것은 아니고, lis 라는 변수가 HTMLCollection라는 녀석의 틀을 가지게 된 것이라고 생각하시면 될 듯합니다. 틀이란 것이 객체지향 프로그래밍에서 의미하는 Class 라는 것과 비슷한데 참고해보셔도 좋을 듯 합니다.