删除字符串最后一位:
a = a.substr(0, a.length - 1);
删除数组最后一个元素:
this.list.splice(this.list.findIndex(item => item.index === this.list.length - 1), 1)
删除字符串最后一位:
a = a.substr(0, a.length - 1);
删除数组最后一个元素:
this.list.splice(this.list.findIndex(item => item.index === this.list.length - 1), 1)