Question

是否有一种方便的办法来过滤<条码>bigObject,其中只有<条码>中定义的特性> 过滤界面<> 目标作为产出?

大型物体有许多特性,我想将信息淡化到我需要的财产上(为节省某些地方,不希望/不能够拯救全部物体)。

I prepared the following code as a jsfiddle here.

// My big object
var bigObject = {
    prop1: {
        prop2: {
            prop3: 123,
            prop4: 456,
            prop5: "TEST"            
        },
        prop6: 789,
        prop7: "xxx"
    },
    prop8: 5.6,
    prop9: 3    
}; 

// My "interface" to filter the object
var filterInterface = {
    prop1: {
        prop2: {
            prop3: true,
        },
        prop7: true
    }                
};

// My expected result, only the properties of 
// big Object which match the interface
var filteredObject = {
    prop1: {
        prop2: {
            prop3: 123,
        },
        prop7: "xxx"
    }                
};

Answer 1

简言之,我期望的是:

var filteredObject = {}

for (var key in filterObject) {
  if (bigObject.hasOwnProperty(key)) {
    filteredObject[key] = bigObject[key];
  }
}

如果你想要“完整”过滤器,包括再检查:

function filter(obj, filterObj) {
  var newObj = {};

  for (var key in filterObj) {

    if (obj.hasOwnProperty(key)) {

      if (typeof obj[key] ==  object  && typeof filterObj[key] ==  object ) {
        newObj[key] = filter(obj[key], filterObj[key]);

      } else {
        newObj[key] = obj[key];
      }
    }
  }
  return newObj;
}


var o = filter(bigObject, filterInterface);

alert(o.prop1.prop7); //  xxx 
alert(o.prop1.prop9); // undefined

友情链接