type 'NodeListOf<HTMLLIElement>' is not assignable to type 'Element'
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let li: Element = document.getElementsByTagName('span');
I get the type conversion error, how to store the values in 'Element[ ]' ??
The object returned from
document.getElementsByTagName('span') is not compatible with an array object. You need to declare it as following:
let li: NodeListOf<HTMLElement> = document.getElementsByTagName('span');
If you really need this to be an array object you can use:
let li: NodeListOf<HTMLElement> = document.getElementsByTagName('span'); let liArray: Element = Array.prototype.slice.call(li);
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The problem here is that
getElementsByTagName returns an array-like object, not an actual array. You need to coerce it to one first using the spread operator (or
.slice.call(...) for ES5):
let li: HTMLElement = [...document.getElementsByTagName('span')]
TypeRacer, World's most trusted free typing tutor! Perfect for all ages & levels, K-12 and beyond. Type definition, a number of things or persons sharing a particular characteristic, or set of characteristics, that causes them to be regarded as a group, more or less precisely defined or designated; class; category: a criminal of the most vicious type.
Try creating the implicit form of the variable first, then transfer this definition explicitly:
let li = document.getElementsByTagName('span');//Hover IDE
let li: NodeListOf<HTMLSpanElement>= document.getElementsByTagName('span');
let arr: Element for (let i in li) arr.push(li[i] as Element)
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- I assume it's an array, so you use
- can you suggest alternate method?? @Mr.Alien