JavaScript object value undefined-CodePudding

it passes the object to the function but I don't know why, despite the fact that it is visible there, I cannot return individual elements of this object because it shows "undefined" in the console logs. Anyone have any idea what I should do or am I doing wrong?

Code:

    async function getMonitors(){
        try {
            let res = await fetch(API_URL "/" API_VERSION "/status/monitors/" location.hostname "/list");
            var data = await res.json();
            if(data.success){
                delete data.success;
                return data;
            }else{
                e=data.message;
            }
        } catch(error){
            e=error;
        }
        if(typeof e!="undefined"&&e!==null){system.error(e);}
    }
    function getMonitorsData(data){
        let totalMonitors = data.totalMonitors;
        console.log(data);
    }
    var m = getMonitors();
    var data = getMonitorsData(m);

Screen of the returned object in the function Object

CodePudding user response：

you have forgotten to call the function and pass the data that are response from your api
async function getMonitors(){ try { let res = await fetch("https://www.7timer.info/bin/astro.php?lon=113.2&lat=23.1&ac=0&unit=metric&output=json&tzshift=0"); var data = await res.json(); getMonitorsData(data) // here is what i added for passing response to function if(data.success){ delete data.success; return data; }else{ e=data.message; } } catch(error){ e=error; } if(typeof e!="undefined"&&e!==null){system.error(e);} } function getMonitorsData(data){ let totalMonitors = data.totalMonitors; console.log(data); } var m = getMonitors(); var data = getMonitorsData(m);

CodePudding user response：

You have missed await keyword while calling getMonitors() function.

    async function getMonitors(){
    try {
        let res = await fetch(API_URL "/" API_VERSION "/status/monitors/" location.hostname "/list");
        var data = await res.json();
        if(data.success){
            delete data.success;
            return data;
        }else{
            e=data.message;
        }
    } catch(error){
        e=error;
    }
    if(typeof e!="undefined"&&e!==null){system.error(e);}
}
function getMonitorsData(data){
    let totalMonitors = data.totalMonitors;
    console.log(data);
}
async function init() { 
    var m = await getMonitors(); 
    var data = getMonitorsData(m); 
}  
init();