js object key sort code example

Example 1: javascript sort object by key

function sortObjectByKeys(o) {
    return Object.keys(o).sort().reduce((r, k) => (r[k] = o[k], r), {});
}
var unsorted = {"c":"crane","b":"boy","a":"ant"};
var sorted=sortObjectByKeys(unsorted); //{a: "ant", b: "boy", c: "crane"}

Example 2: js sort array of object by key

/**
 * Function to sort alphabetically an array of objects by some specific key.
 * 
 * @param {String} property Key of the object to sort.
 */
function dynamicSort(property) {
    var sortOrder = 1;

    if(property[0] === "-") {
        sortOrder = -1;
        property = property.substr(1);
    }

    return function (a,b) {
        if(sortOrder == -1){
            return b[property].localeCompare(a[property]);
        }else{
            return a[property].localeCompare(b[property]);
        }        
    }
}