javascript - 如何从最后一个数组元素中删除字符

Question

我需要删除 Javascript 数组中的最后一个元素逗号

var arr =  ["AAA,","BBB,"];

我需要下面的结果

var arr =  ["AAA,","BBB"];

感谢任何帮助...

Answer 1

var arr =  ["AAA,","BBB,"];

arr[arr.length - 1] = arr[arr.length - 1].replace(',', '');

console.log(arr);