var arr = [
{ name: "height", value:"20" },
{ name: "width", value:"30" }
]
{
height: "20",
width: "30"
}
var obj = Object.assign(...arr.map((e) => ({[e.name]: e.value})))
or
var obj = arr.reduce((acc, cur) => {
acc[cur.name] = cur.value
return acc;
}, {})