JavaScript version?

SPlatten

How out of date is the implementation of JavaScript with Qt 5.15.2 ?

Today I was working with a script and wanted to insert an item at the start of an array, the array already had content, there is a way of inserting an item into the front of the array using the unshift function. However this doesn't work as I've tried it today.

Here is an example:

var arySimon = [1,2,3,4];
arySimon.unshift(99);

Should result in arySimon containing:

99,1,2,3,4

Nothing is happening, unshift isn't doing anything. I'd just like to know for future reference which version of JavaScript is in use.

KroMignon

@SPlatten said in JavaScript version?:

How out of date is the implementation of JavaScript with Qt 5.15.2 ?

You can find it out here:

SPlatten

@KroMignon , thank you

J.Hilk

Matter of fact is, it was added in the 6th version of ECMA and Qml uses the 7th one

So it should be part of the JS engine, and a quick test

    Component.onCompleted:{
        var array1 = [1, 2, 3];
        console.log(array1)
        array1.unshift(5)
        console.log(array1);
    }

confirms with the output:

qml: [1,2,3]
qml: [5,1,2,3]

KroMignon

@SPlatten said in JavaScript version?:

thank you

Your welcome, by the way I just made a little test:

var myList = [1, 2, 3, 4]
console.log("List start: " + myList)
myList.unshift(99)
console.log("List unshifted: " + myList)

Returns in console window (with Qt 5.12.10):

List start: 1,2,3,4
List unshifted: 99,1,2,3,4

SPlatten · Returns in console window (with Qt 5.12.10):

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