const obj = {
a: undefined,
b: null,
c: 'nodejs',
d: NaN,
e: 927398,
f: false,
g: true,
h: 'python'
};
Object.keys(obj).forEach(key => {
if (!obj[key]) {
delete obj[key];
}
});
console.log(obj);
/*
run:
{ c: 'nodejs', e: 927398, g: true, h: 'python' }
*/