--- the JavaScript objects are removed json traversal key and value placed in the array

 

var obj = { name: "buding", age: "23", hobby: "dance" }
var obj_key = []
var obj_value = []
for (var key in obj) {
  obj_key.push(key)
  obj_value.push(obj[key])
}
console.log("输出obj_key", obj_key)
console.log("输出obj_value", obj_value)