1、jQuery代码示例如下

//定义一个带有空值的数组

var userIdArr= ["1", "2", "5", "8", " ","12"];

//去掉数组中的空值

var userIds = this.userIdArr.filter(s => $.trim(s).length > 0);

//输出结果

console.log(userIds);

2、输出结果如下

结果：["1", "2", "5","8","12"]