LoDash _.each Pass By Reference Example

by Matthew Marcus

JavaScript

var arr = [
    {
        foo: 'foo',
        bar: 2
    },
    {
        foo: 'foo',
        bar: 2
    },
    {
        foo: 'foo',
        bar: 2
    },
    {
        foo: 'foo',
        bar: 2
    }
];

_.each(arr, function(obj){
    obj.baz = {
        val: obj.foo + obj.bar
    };
});
       
console.log(arr);