React state and JSON and arrays => faulty result - json

Question

Edit: So, I found the solution to my initial question, which made me realize I have another issue.
It seemed to be easier than I thought
setNumbers(e) {
e.preventDefault();
var already_exists = false;
var ls_data = this.state.storedNumbers;
var rname = document.getElementById('name').value;
var rnumb = document.getElementById('nummer').value;
var ls_key = this.state.ls_key;
for (key in ls_data) {
if(ls_data.hasOwnProperty(key) === true) {
if(ls_data[key].name === rname) {
if(ls_data[key].Number === rnumb) {
already_exists = true;
}
}
}
}
if(!already_exists) {
ls_key++;
ls_data[ls_key] = {
name: rname,
Number: rnumb
};
localStorage.setItem("ls_numbers", JSON.stringify(this.state.storedNumbers));
localStorage.setItem("ls_key", ls_key);
this.setState({
ls_key: localStorage.getItem("ls_key"),
});
}
}
But now my issue is, that I can't iterate over it, because it is a nested object and not an array. So .map will not work (this.state.storedNumbers.map is not a function).
Changing storedNumber to an array sadly doesn't solve the issue, as
ls_data[ls_key] = {
name: rname,
Number: rnumb
};
isn't working in an array. So now my question is. Can I use my ls_key variable to create a name object in my array? Using the code above results in:
[
null,
{
"name" : "Person 1",
"Number" : "XXXXXXXX"
},
{
"name" : "Person 2",
"Number" : "XXXXXXXX"
}
]
while the array should look like:
[
"1": {
"name" : "Person 1",
"Number" : "XXXXXXXX"
},
"2": {
"name" : "Person 2",
"Number" : "XXXXXXXX"
}
]
Or is there a way to iterate over the nested JSON result, as .map does for an array?

Answer 1

Alright then, just figured it out myself:
The reason my data got malformed (initial question), still in the blue about that. I've changed a lot of code and reverted to the original code again, et voila, miraculously it all worked. Can't tell you what the difference was. After that I could easily simplify the code as shown in the edited question.
To iterate over the data, the code below was my solution. Should you have a more cleaner solution, let me know!
{this.state.storedNumbers.length < 1
? <li className='list-group-item'><strong>Geen recente nummers...</strong><span className='pull-right'><span className='glyphicon glyphicon-warning glyph-xl'></span></span></li>
: Object.keys(this.state.storedNumbers).map((number) => {
return (
<div className='item' key={number}>
<a className='list-group-item list-link'>
<strong>{this.state.storedNumbers[number].name}</strong> - ({this.state.storedNumbers[number].Number})
</a>
<span className='button-delete glyph-xl'>
<i className='glyphicon glyphicon-trash glyph-xl' aria-hidden='true'></i>
</span>
</div>
)})
}