converting an object into arrays in angular2 Typescript

Question

I have an object which is getting dynamically loaded from REST response. Now i have to convert this object into 2 arrays. 1) an array with key and values in which the value is null. 2) an array with key and values in which the value is not null.

And these both arrays, i need to display them in html with key and values in sorted order like. first the not null values and then later the null values.

object1 : {
'name' : 'xyz',
'age' : '23',
'dob' : null,
'address' : null
}

Am finding a problem while converting this object into an array! What i have been trying is

this.notNullValues = new Array<string>();
for(let obj of this.object1){
console.log(obj);
}

Answer 1

You can have a look at the below code. Also you can do the same with Object.keys instead of for..in .

Also, you can check like this, if(object1[key] == null)

 var object1 = { 'name' : 'xyz', 'age' : '23', 'dob' : null, 'address' : null }; var nullArray = []; var notNullArray = []; for(let key in object1){ var item = {}; item[key] = object1[key]; if(object1[key]){ notNullArray.push(item); } else { nullArray.push(item); } } console.log(nullArray); console.log(notNullArray); 

With Object.keys ,

 var object1 = { 'name' : 'xyz', 'age' : '23', 'dob' : null, 'address' : null }; var nullArray = []; var notNullArray = []; Object.keys(object1).forEach(function(key) { var item = {}; item[key] = object1[key]; if(object1[key]){ notNullArray.push(item); } else { nullArray.push(item); } }); console.log(nullArray); console.log(notNullArray); 

Answer 2

    var notNullValues = new Array();
    var nullValues = new Array();
    for(let key in object1){
    var value = object1[key];
    if(value ===null){
      nullValues.push({
        key: value;
      });
    } else {
      notNullValues.push({
          key: value;
      });
    }
});

Hope it helps :)