How to reorganize an array from the value of for loop in JavaScript and angular2

Question

For example, I have an array

let arry = [
{"selected":true,"name":"Tony"},
{"selected":false,"name":"Lily"},
{"selected":true,"name":"Liyang"}];

How do I use a for loop in JS to get only the values ​​that are selected to be true?

for(var i=0;i<arry.length;i++){
    if(arry[i].selected=true){
        console.log(arry[i].name)
    }
}

The above for China still prints out 3 strings. And I only need the format ["Tony","Liyang"], how can I get it?
I have tried using push to add to an empty array before, but every for in the push only pushes the value currently reached by for, and does not add all the values ​​​​to an array!
Please help me!

Answer 1

if(arry[i].selected=true)

This is wrong, it is written as assignment.

Answer 2

One = is assignment, and two = is comparison. Please be more careful when writing next time. Sometimes the logic is fine, but it just doesn’t work. Then there may be a syntax problem somewhere.

Answer 3

Just use arry[i].selected to determine. Why do we need to determine whether the values ​​are equal?

Answer 4

var newArr = []
arry.forEach(function(value){if(value.selected) newArr.push(value.name)})

Answer 5

It’s so convenient to use filter and map

let arry = [
    { "selected": true, "name": "Tony" },
    { "selected": false, "name": "Lily" },
    { "selected": true, "name": "Liyang" }
];

let selected = arry.filter(m => m.selected);

console.log("selected", selected);

let names = selected.map(m => m.name);
console.log("names", names);

// 连起来

let result = arry
    .filter(m => m.selected)
    .map(m => m.name);
console.log("result", result);