JavaScript 数组删除/插入一项 纳铭 2021-07-23 203 阅读1分钟 splice arr = ['a','b','c','d'] arr.splice(1,1) //['a', 'c','d'] arr = ['a','b','c','d'] arr.splice(1,0,'2') //['a','b','2', 'c','d'] delete arr = ['a','b','c','d'] delete arr[1] //[‘a’, ,‘c’,‘d’]
