Javascript 从 N 到最后一个元素的切片数组
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slice array from N to last element
提问by evfwcqcg
How to make this transformation?
如何进行这种转变？
["a","b","c","d","e"] // => ["c", "d", "e"]
I was thinking that slicecan do this, but..
我以为slice可以做到这一点，但是..
["a","b","c","d","e"].slice(2,-1) // [ 'c', 'd' ]
["a","b","c","d","e"].slice(2,0) // []
回答by Tim S.
Don't use the second argument:
不要使用第二个参数：
Array.slice(2);
https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/slice
https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/slice
If end is omitted, slice extracts to the end of the sequence.
如果省略 end，则切片提取到序列的末尾。
回答by Connor Goddard
An important consideration relating to the answer by @insomniac is that spliceand sliceare two completely different functions, with the main difference being:
与@insomniac 的答案相关的一个重要考虑因素是splice和slice是两个完全不同的函数，主要区别在于：
splicemanipulates the original array.slicereturns a sub-set of the original array, with the original array remaining untouched.
splice操作原始数组。slice返回原始数组的子集，原始数组保持不变。
See: http://ariya.ofilabs.com/2014/02/javascript-array-slice-vs-splice.htmlfor more information.
有关更多信息，请参阅：http: //ariya.ofilabs.com/2014/02/javascript-array-slice-vs-splice.html。
回答by insomiac
Just give the starting index as you want rest of the data from the array..
只需给出起始索引，因为您需要数组中的其余数据。
["a","b","c","d","e"].splice(2) => ["c", "d", "e"]
回答by jayvatar
Slice ends at the specified end argument but does not include it. If you want to include it you have to specify the last index as the length of the array (5 in this case) as opposed to the end index (-1) etc.
切片在指定的结束参数处结束，但不包括它。如果要包含它，则必须将最后一个索引指定为数组的长度（在本例中为 5），而不是结束索引 (-1) 等。
["a","b","c","d","e"].slice(2,5) // = ['c','d','e']
["a","b","c","d","e"].slice(2,5) // = ['c','d','e']
回答by Alok Ranjan
var arr = ["a", "b", "c", "d", "e"];
arr.splice(0,2);
console.log(arr);