获取拆分字符串数组的最后一个元素

I need to get the last element of a split array with multiple separators. The separators are commas and space. If there are no separators it should return the original string.

我需要使用多个分隔符来获取split数组的最后一个元素。分隔符是逗号和空格。如果没有分隔符，则应返回原始字符串。

If the string is "how,are you doing, today?" it should return "today?"

如果字符串是“你今天怎么样？”它应该返回“今天？”

If the input were "hello" the output should be "hello".

如果输入为“hello”，则输出应为“hello”。

How can I do this in JavaScript?

我怎么能用JavaScript做到这一点？

6 个解决方案

#1

var str = "hello,how,are,you,today?";
var pieces = str.split(/[\s,]+/);

At this point, pieces is an array and pieces.length contains the size of the array so to get the last element of the array, you check pieces[pieces.length-1]. If there are no commas or spaces it will simply output the string as it was given.

此时，pieces是一个数组，pieces.length包含数组的大小，因此要获取数组的最后一个元素，请检查[pieces.length-1]。如果没有逗号或空格，它将只输出给定的字符串。

alert(pieces[pieces.length-1]); // alerts "today?"

6 个解决方案

#1

更多相关文章

随机推荐