JavaScript/VueJS：检查数组是否包含具有特定值的元素的对象
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JavaScript/VueJS: Check if an Array contains an object with an element that has specific value
提问by SPQRInc
I would like to solve this problem:
我想解决这个问题：
I got an Object that contains a property named specs. This property contains an Arrayof Objectsthat all have 2 properties:
我有一个包含名为specs. 此属性包含Array的Objects所有的有2个属性：
- name
- value
- 姓名
- 价值
So my object is like this:
所以我的对象是这样的：
Object
-Title
-Date
-Specs [Array]
-- [0] Name: "Power"
-- [0] Value: 5
-- [1] Name: "Weight"
-- [1] Value: 100
So - now I would like to check, if my Specs-Array contains an item that has the name "Power". If this is the case, I would like to use the value of this element.
所以 - 现在我想检查一下，我的 Specs-Array 是否包含一个名为“Power”的项目。如果是这种情况，我想使用这个元素的值。
How can I solve this?
我该如何解决这个问题？
回答by Deep
You can filter the array based on the name attribute and check if the filter returns a result array , if yes then you can use it with index to get the value.
您可以根据 name 属性过滤数组并检查过滤器是否返回结果数组，如果是，则可以将其与索引一起使用以获取值。
var data = {specs:[{Name:"Power",Value:"1"},{
Name:"Weight",Value:"2"},{Name:"Height",Value:"3"}]}
var valObj = data.specs.filter(function(elem){
if(elem.Name == "Power") return elem.Value;
});
if(valObj.length > 0)
console.log(valObj[0].Value)回答by Vinod Louis
consider the main object name is objTemp
考虑主要对象名称是 objTemp
you can do
你可以做
var arrR = objTemp.Specs.filter(function(ele){
return (ele.Name == "Power")
});
if(arrR.length)
//has prop
else
// no prop
回答by Saurabh
You can use somemethod on array, which will return true or false, depending on your condition, like following:
您可以在数组上使用一些方法，该方法将返回 true 或 false，具体取决于您的条件，如下所示：
var powerIndex
var doesPowerExist = yourObj.specs.some((spec, index) => {
var powerIndex = index
return spec.name == "Power"
})
You can use doesPowerExistvar to decided whether to use the value of this element.
您可以使用doesPowerExistvar 来决定是否使用该元素的值。
回答by Ankit Kumar Ojha
$.each(object.Specs,function(index,obj){
if(obj.Name === "Power")
var myVar = obj.Value
});
