For example, a DOM NodeList (returned by several DOM methods like getElementsByTagName) is not an array, but it is an array-like object with a length field and is indexable in JavaScript.The array returned by slice() returns a shallow copy, meaning that any references within the original array will just be copied over as-is, and won't allocate memory for completely new objects. It’s also used to convert array-like objects into arrays. Step 3 In for loop, initialize counter variable ‘i with a value 0. Step 2 Declare the array of the len size. string.split (separator, limit) Separator: Defines how to split a string by a comma, character etc. Step 1 Store a length of nodeList in a len variable.

It takes 2 parameters, and both are optional. It divides a string into substrings and returns them as an array. The split ( ) method is used for strings. The best way to split an array into two halves in JavaScript is by using the () method, because it returns a portion of the array without modifying the original array (i.e.

This is the starting index of an array from which items will be copied. Method-4: Use the filter method for array slicing. The first parameter is the start parameter. Syntax for this function follows: array.slice (start, end) Start (optional).

slice.call(document.getElementsByTagName(‘a’), 0)这种乾坤大挪移的办法，借用了这个原生数组提供的slice方法，可以轻松把NodeList转换成真正的JavaScript数组。 Slice ( ) and splice ( ) methods are for arrays. The array slice () method in JavaScript accepts up to two optional parameters, and both of these are zero-based indexes. Slice() always returns a new array - the array returned by slice(0) is identical to the input, which basically means it’s a cheap way to duplicate an array. Writingskinbind($substr_replacemeansknew)

Node js array slice