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I'm encountering a problem with setTimeout, and I can't figure out why.

I'm using cordova, and the setTimeout function leads to curious portment.

app.displayData = function(device) {
    app.readThermometer(device);
    app.readAccelerometer(device);
    app.readHumidity(device);
    app.readMagnetometer(device);
    //setTimeout(app.displayData(device), 5000);
};

This is executed once.

app.displayData = function(device) {
    app.readThermometer(device);
    app.readAccelerometer(device);
    app.readHumidity(device);
    app.readMagnetometer(device);
    setTimeout(app.displayData(device), 5000);
};

This is executed many times, but way faster than once every 5 seconds. It is a problem for me because it prevent jQuery from executing correctly. (Never getting the dom modification expected)

What am I missing? If it is a bug in cordova, do you know other way to delay code execution in javascript?

I'm encountering a problem with setTimeout, and I can't figure out why.

I'm using cordova, and the setTimeout function leads to curious portment.

app.displayData = function(device) {
    app.readThermometer(device);
    app.readAccelerometer(device);
    app.readHumidity(device);
    app.readMagnetometer(device);
    //setTimeout(app.displayData(device), 5000);
};

This is executed once.

app.displayData = function(device) {
    app.readThermometer(device);
    app.readAccelerometer(device);
    app.readHumidity(device);
    app.readMagnetometer(device);
    setTimeout(app.displayData(device), 5000);
};

This is executed many times, but way faster than once every 5 seconds. It is a problem for me because it prevent jQuery from executing correctly. (Never getting the dom modification expected)

What am I missing? If it is a bug in cordova, do you know other way to delay code execution in javascript?

• javascript
• cordova
• settimeout

Share Improve this question Follow asked Jul 15, 2014 at 8:05 RichardRichard 1,05111 gold badge1212 silver badges2929 bronze badges 2

• why do you want to delay code execution? What do you want to do? The second code will run infinitely as it is a recursive call. You need to use the setTimeout call outside app.displayData – frank Commented Jul 15, 2014 at 8:12
• yes, I know. It's my purpose to make it run infinitely :). I'm getting a continuous flow of data, and i'm trying to update them. – Richard Commented Jul 15, 2014 at 8:17

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1 Answer 1

Sorted by: Reset to default 4

You're calling the function app.displayData directly

setTimeout(app.displayData(device), 5000);

Try the following instead

setTimeout(function () {
    app.displayData(device);
}, 5000);

And another alternative if you prefer Function.bind

setTimeout(app.displayData.bind(app, device), 5000);

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