数组对象判断对象中值是否为空，为空删除当前对象

let list = [{ key: '', val: '' }, { key: '1', val: '1' }, { key: '1', val: '' }, { key: '1' }, { key: '2', val: '2' }]

list.filter(item => !Object.values(item).includes('')

结果：[{key: '1', val: '1'}, {key: '1'}, {key: '2', val: '2'}]