How to check if element has autoNumeric initialized

Question

How to check if an HTML element already has autoNumeric initialized, so i won't initialize it again?

Initializing it twice results in all input numbers appearing twice.

if (// autonumeric not yet initialized) {
    var anObject = new AutoNumeric(document.querySelector(inputSel), autoNumericSettings);
}

Edit: The reason to check is that autoNumeric might be previously initialized elsewhere, in another script with different autoNumericSettings and this script needs to respect the earlier set settings.

Aliaksandr Pitkevich · Accepted Answer · 2018-03-07T12:25:15.277

14

probably, you can use getAutoNumericElement(domElement) to check if an HTML element already has autoNumeric initialized

if (AutoNumeric.getAutoNumericElement(domElement) === null) {
    var anObject = new AutoNumeric(document.querySelector(inputSel), autoNumericSettings);
}

edited Mar 07 '18 at 12:25

answered Mar 07 '18 at 12:17

Aliaksandr Pitkevich

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Alex · Answer 2 · 2022-08-31T08:22:01.537

4

You can indeed use AutoNumeric.getAutoNumericElement(domElement) as Aliaksandr mentioned to check if an element is returned, but the official way to check if a DOM element is already managed by AutoNumeric is this:

AutoNumeric.isManagedByAutoNumeric(domElementOrSelector);

So your code should be updated like so:

let anObject;
if (!AutoNumeric.isManagedByAutoNumeric(inputSel)) {
    // Also, no need to querySelector `inputSel` here:
    anObject = new AutoNumeric(inputSel, autoNumericSettings);
}

EDIT: Disclaimer; I'm the maintainer of AutoNumeric

edited Aug 31 '22 at 08:22

answered May 05 '18 at 00:39

Alex

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I inverted this if statement and this solution works well for me. – worktech Dec 10 '19 at 13:59
My bad, indeed the `if` condition should be negated, I'll edit my answer. Thanks @worktech – Alex Dec 11 '19 at 23:37

score 0 · Answer 3 · answered Mar 07 '18 at 12:15

0

Don't declare the variable inside the if, do it outside and then just check.

var anObject = null;

if(anObject !== null) {
   anObject = new AutoNumeric(document.querySelector(inputSel), autoNumericSettings);
}

If you post a bit more of your code I can make it better, I really don't know the structure of your complete code, but the principle is the same.

answered Mar 07 '18 at 12:15

SrAxi

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That's a good suggestion, but doesn't work here. The reason to check is that autoNumeric might be initialized elsewhere, in another script. I edited the question. – lofihelsinki Mar 07 '18 at 12:18

How to check if element has autoNumeric initialized

3 Answers3