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I’m having a problem with the code below, I get a variable( {Devices}} ) a JSON and I try to convert it into an object to get the information of how many devices I have inside it and how many critical alarms I have for a business rule. However, the Json.Parse method does not work or I am unable to implement it correctly, follow the code below:
<!DOCTYPE html>
<html>
<body>
<p id="in" hidden> {{devices}} </p>
<p id="out"></p>
<p id="out1"></p>
<p id="out2"></p>
<script type="text/javascript">
var strJson = document.getElementById("in").innerHTML;
//var objJson = JSON.parse(document.getElementById("in").innerHTML); //motivo do erro, ele para o funcionamento aqui
var contDev = 0;
var contCritical = 0;
var nObj = 0;
var tipo = "";
document.getElementById("out").innerHTML = typeof strJson; //aqui ele me devolve uma string
function recursive(obj, key1, key2) {
if (typeof obj !== 'object'){
tipo = typeof obj;
return;
}
Object.keys(obj).forEach(k => { //para cada objeto ele procura uma chave
if (k == key1 && k[key1] == "c8y_MQTTDevice") {
contDev = contDev + 1;
}
else if (k == key2 && k[key].Critical == 1) {
contCritical = contCritical + 1;
}
else {
if (typeof obj[k] == 'object') { //se for outro objeto, dentro de um, chama recursivamente
recursive(obj[k], key, newValue);
}
}
});
}
recursive(objJson, "type", "c8y_ActiveAlarmsStatus")
document.getElementById("out1").innerHTML = "Qtde de Devices: " + contDev;
document.getElementById("out2").innerHTML = tipo + "___";
</script>
</body>
Json I get from this variable!
{
"7097240": {
"additionParents": {
"references": [],
"self": {}
},
"owner": "service_device-simulator",
"childDevices": {
"references": [],
"self":
},
"com_cumulocity_model_Agent": {},
"childAssets": {
"references": [],
"self": {}
},
"creationTime": "2019-10-01T16:44:15.111+02:00",
"ts_home": {
"lng": -47.873174,
"lat": -22.064469
},
"c8y_SupportedOperations": [
"c8y_Configuration",
"c8y_Position",
"c8y_Address",
"c8y_Mobile",
"c8y_LocationUpdate",
"c8y_Firmware",
"c8y_Restart",
"c8y_Software"
],
"c8y_Position": {
"lng": -47.87335,
"alt": 0,
"accuracy": 10,
"lat": -22.065523
},
"type": "c8y_MQTTDevice",
"lastUpdated": "2019-10-18T15:39:31.664+02:00",
"c8y_ActiveAlarmsStatus": {
"critical": 0
},
"c8y_IsDevice": {},
"childAdditions": {
"references": [],
"self": {}
},
"name": "GPS_VW-SC_2 #1",
"assetParents": {
"references": [],
"self": {}
},
"deviceParents": {
"references": [],
"self":{}
},
"self":{},
"id": "7097240"
}
But why are you parsing for Json if this is already one? Your question is unclear.
– LeAndrade
So I’d like to turn the string q I’m getting into an object, so I can work on that, actually wanted to know how many I’m getting and what kind.
– Lukas_Russo
I think your problem is that Json is invalid.
– LeAndrade
Then I checked and the error that gives is as follows: Uncaught Syntaxerror: Unexpected token { in JSON at position 1 at JSON.parse (<Anonymous>) at <Anonymous>:5:21.... However, when you play on a site that checks and organizes this json for me, which is coming as a string, it organizes neatly and complains if you have any more { a or less!
– Lukas_Russo
If you notice the second self from top to bottom, the {}
– LeAndrade
Opá Leandrade, actually this Json I think is correct, because in this part I got some information, however I found that the error q I am having is that inside the first tag there is a variable {{Devices}} and when I try to manipulate it takes this string and not the json that is played later, I wonder if there is any way to take the contents of this variable to work within my script?
– Lukas_Russo
But what syntax is this
<p id="in" hidden> {{devices}} </p>?? Usa Angular?– LeAndrade
There’s actually a cloud platform of the company that I work with, and they make this variable available, and within it a part where I can program in HTML, and when I run my program it takes the name of the variable to work with and not its content, therefore, I do not know if when my script runs it does not take the correct information because the variable is too long to arrive or somehow the value of this variable is only displayed after my program is compiled!
– Lukas_Russo