How do i push objects into the same array?

debugcn 投稿 Dev

ii iml0sto1

I am having trouble applying objects to my array, every time i push the object into the array a new array is created.

I have made some edits at the bottom of the question.

I need an array of objects to look like this

var arr = [{name: 'bent', town: 'kansas'}, { name:'benny', town:'vegas'}];

Insted mine looks like this

var arr = [0:{name: 'bent', town: 'kansas'}1:{ name:'benny', town:'vegas'}]

PHP

$stmt = $dbCon->prepare("SELECT ctc_coins_name, "
        . " ctc_coins_town "
        . " FROM ctc_coins ");
$stmt->execute();
$result_coins = $stmt->fetchAll();

$coins = [];
foreach ($result_coins as $result) {
    $coins[] = [
        'name' => $result['ctc_coins_name'],
        'twon' => $result['ctc_coins_town]
    ];
}
echo json_encode($coins);

Javascript

function update_local_coins() {
    var http = new XMLHttpRequest();
    var url = "pages/ajax/getCoins.php";
    http.open("POST", url, true);
    http.onreadystatechange = function () {
        if (http.readyState === 4 && http.status === 200) {
            if (this.responseText) {
                jsonObj = JSON.parse(this.responseText);
                console.log(jsonObj);
                var coins = [];
                for (var l in jsonObj) {
                    coins.push(jsonObj[l]);
                }
                console.log("COINS");
                console.log(coins);
            } else {
                alert("Noobs");
            }
        }
    };
    http.send();
}

I have tried this with no luck

coins.concat(jsonObj[l]) 'returns empty array'
coins.push.apply(coins, jsonObj[l]) 'returns empty array'
coins.push(jsonObj[l]) 'returns the example array'

EDIT:

console.log(jsonObj);
(13) [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]
0
:
{name: "Bitcoin", usd: "5622.73", btc: "1.00000000"}
1
:
{name: "Ethereum", usd: "338.81", btc: "0.06013390"}
2
:
{name: "Litecoin", usd: "58.65", btc: "0.01040990"}
3
:
{name: "Dash", usd: "307.31", btc: "0.05454360"}
4
:
{name: "Golem", usd: "0.21", btc: "0.00003759"}
5
:
{name: "NEM", usd: "0.21", btc: "0.00003674"}
6
:
{name: "Neutron", usd: "0.15", btc: "0.00002686"}
7
:
{name: "DigiByte", usd: "0.01", btc: "0.00000175"}
8
:
{name: "Siacoin", usd: "0.00", btc: "0.00000074"}
9
:
{name: "Linda", usd: "0.00", btc: "0.00000005"}
10
:
{name: "LiteDoge", usd: "0.00", btc: "0.00000001"}
11
:
{name: "ArcticCoin", usd: "0.05", btc: "0.00000922"}
12
:
{name: "NoLimitCoin", usd: "0.13", btc: "0.00002321"}
length
:
13
__proto__
:
Array(0)

EDIT: php echo json

[{"name":"Bitcoin","usd":"5622.73","btc":"1.00000000"},{"name":"Ethereum","usd":"338.81","btc":"0.06013390"},{"name":"Litecoin","usd":"58.65","btc":"0.01040990"},{"name":"Dash","usd":"307.31","btc":"0.05454360"},{"name":"Golem","usd":"0.21","btc":"0.00003759"},{"name":"NEM","usd":"0.21","btc":"0.00003674"},{"name":"Neutron","usd":"0.15","btc":"0.00002686"},{"name":"DigiByte","usd":"0.01","btc":"0.00000175"},{"name":"Siacoin","usd":"0.00","btc":"0.00000074"},{"name":"Linda","usd":"0.00","btc":"0.00000005"},{"name":"LiteDoge","usd":"0.00","btc":"0.00000001"},{"name":"ArcticCoin","usd":"0.05","btc":"0.00000922"},{"name":"NoLimitCoin","usd":"0.13","btc":"0.00002321"}]

kkaosninja

Your objective was to get the array of objects received in the AJAX response.

As I said in my first comment to your question, you already got this in this line

jsonObj = JSON.parse(this.responseText);

Now, you seem to think that you have received an object(with numbers being fields, and the objects being values). But this is just how console.log behaves :)

As for your final question regarding a way to confirm that is indeed an array, all you need to do is check the string representation of the result of JSON.parse() i.e use JSON.stringify. Below example demonstrates this.

EDIT: Have updated code snippet with demonstration of findMatches() posted in the comment.

        var s = '[{"name":"Bitcoin","usd":"5622.73","btc":"1.00000000"},{"name":"Ethereum","usd":"338.81","btc":"0.06013390"},{"name":"Litecoin","usd":"58.65","btc":"0.01040990"},{"name":"Dash","usd":"307.31","btc":"0.05454360"},{"name":"Golem","usd":"0.21","btc":"0.00003759"},{"name":"NEM","usd":"0.21","btc":"0.00003674"},{"name":"Neutron","usd":"0.15","btc":"0.00002686"},{"name":"DigiByte","usd":"0.01","btc":"0.00000175"},{"name":"Siacoin","usd":"0.00","btc":"0.00000074"},{"name":"Linda","usd":"0.00","btc":"0.00000005"},{"name":"LiteDoge","usd":"0.00","btc":"0.00000001"},{"name":"ArcticCoin","usd":"0.05","btc":"0.00000922"},{"name":"NoLimitCoin","usd":"0.13","btc":"0.00002321"}]';
    
        var arrayOfObjects = JSON.parse(s);
    
        var stringifiedArray = JSON.stringify(arrayOfObjects);
    
        document.getElementById("op").innerText = stringifiedArray;
    
        function findMatches(arr, searchString) {
            const matches = [];
            arr.forEach(obj => {
                for(const key in obj) {
                if (obj[key].includes(searchString)) {
                    matches.push(obj[key]);
                }
            }
        });
            return matches;
        }
    
    var matches = findMatches(arrayOfObjects, "Lite");
    
    document.getElementById("mr").innerText = JSON.stringify(matches);

<p id="op">

    <!-- Result of JSON.stringify will appear here -->

    </p>
    <hr>
    <p id="mr">
    <!-- Result of findMatches will appear here -->
    </p>

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