如何使用JavaScript在forEach循环中过滤结果

Question

I am having a hard time figuring out how to iterate over an array and only doing something when a specific value is found.

Any help is greatly appreciated.

What I have in mind:

ForEach Entry, Where X = Y {
 console.log('I did something');
}

Actual Data:

[{
    "id" : 0,
    "fullName" : "George",
    "email": "george@test.ca",
    "group": 'Faculty',
    "totalFiles": 12,
    "outstandingFiles": 10,

},
{
    "id" : 1,
    "fullName" : "Albert",
    "email": "albert@test.ca",
    "group": 'Student',
    "totalFiles": 15,
    "outstandingFiles": 8,
}];

Answer 1

There are so many options to filter value without foreach, you can use find which will return the first matching value

 var myArray = [{ "id" : 0, "fullName" : "George", "email": "george@test.ca", "group": 'Faculty', "totalFiles": 12, "outstandingFiles": 10, }, { "id" : 1, "fullName" : "Albert", "email": "albert@test.ca", "group": 'Student', "totalFiles": 15, "outstandingFiles": 8, }]; var result = myArray.find(t=>t.group =='Faculty'); console.log(result); 

EDIT

 var myArray = [{ "id" : 0, "fullName" : "George", "email": "george@test.ca", "group": 'Faculty', "totalFiles": 12, "outstandingFiles": 10, }, { "id" : 1, "fullName" : "Albert", "email": "albert@test.ca", "group": 'Student', "totalFiles": 15, "outstandingFiles": 8, }]; myArray.filter(t=>t.group =='Faculty').forEach(result => console.log(result)); 

Answer 2

You can use filter if you want many results or find if you want the first result to your query

This is an example using filter

const data = [
    {
        "id" : 0,
        "fullName" : "George",
        "email": "george@test.ca",
        "group": 'Faculty',
        "totalFiles": 12,
        "outstandingFiles": 10,
    },{
        "id" : 1,
        "fullName" : "Albert",
        "email": "albert@test.ca",
        "group": 'Student',
        "totalFiles": 15,
        "outstandingFiles": 8,
    }
];

const result = data.filter(info => {
    return info.group === 'Faculty'
})

console.log(result) will output

[ { id: 0,
    fullName: 'George',
    email: 'george@test.ca',
    group: 'Faculty',
    totalFiles: 12,
    outstandingFiles: 10 } ]

You can learn about this and more array methods in http://javascript.info/array-methods