sort by object property javascript
let list = [
{
name: "world"
},
{
name: "hello",
},
];
// This doesn't account for if names are the same between objects
let x = list.sort((a, b) => (a.name > b.name ? 1 : -1));
console.log(x);
/*
[
{
name: "hello",
},
{
name: "world"
},
];
*/javascript sort array by object property
function compareFirstNames( a, b ) {
if ( a.first_name < b.first_name ){
return -1;
}
if ( a.first_name > b.first_name ){
return 1;
}
return 0;
}
var people =[
{"first_name":"Carol", "age":29},
{"first_name":"Anna", "age":32},
{"first_name":"Bob", "age":32}
];
people.sort( compareFirstNames ); //people is now sorted by first name from a-zjavascript sort object
var maxSpeed = {
car: 300,
bike: 60,
motorbike: 200,
airplane: 1000,
helicopter: 400,
rocket: 28800
};
var sortable = [];
for (var vehicle in maxSpeed) {
sortable.push([vehicle, maxSpeed[vehicle]]);
}
sortable.sort(function(a, b) {
return a[1] - b[1];
});
//[["bike", 60], ["motorbike", 200], ["car", 300],
//["helicopter", 400], ["airplane", 1000], ["rocket", 28800]]sort() object values javascript
list.sort((a, b) => (a.color > b.color) ? 1 : (a.color === b.color) ? ((a.size > b.size) ? 1 : -1) : -1 )hange the order of properties in object javascript
// Method 1: Returnes new Object
function preferredOrder(obj, order) {
// returns new object with modified keys
const newObj: any = {};
for (let key of order) {
newObj[key] = obj[key];
}
return newObj;
}
// Method 2: Modifies that Object
preferredOrder(obj: any, keyOrder: any[]) {
// modifies old object with new order
keyOrder.forEach((k) => {
const v = obj[k]
delete obj[k]
obj[k] = v
})
}
// preferredOrder({a:'a',b:'b',c:'c'},[b,a,c])
// output= > {b:'b',a:'a',c:'c'}Copyright © 2021 Codeinu
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