您需要像这样扩展filter函数：

recordStore.filter( function (object) {
    return object.Name === 'Name1' || object.age === 25;
});

终于想通了！
Filter对象可以从store创建，然后用作store的filter方法的参数。
执行两个查询的OR/ AND：

recordStoreFilter= new recordStore.Filter()
name1Filter= recordStoreFilter.eq('name': 'Name1')
age25Filter= recordStoreFilter.eq('age', 25)

unionFilter= recordStoreFilter.or(name1Filter, age25Filter)
intersectionFilter= recordStoreFilter.and(name1Filter, age25Filter)

unionData= recordStore.filter(unionFilter)
intersectionData= recordStore.filter(intersectionFilter)

//Set using the following
recordGrid.set('collection', unionData) //or intersectionData

要匹配数组中的一个值：

colorFilter= recordStoreFilter.contains({'color', 'red'})
colorData= recordStore.filter(colorFilter)
//This will give the records that have color red in the array.

有关详细信息，请参见here。