Javascript variable from array as the object key

Asked Apr 06 '20 at 16:03

Active Apr 06 '20 at 16:53

Viewed 52 times

I have a selection box with a possible total of 13 options and I'm trying to dump the contents into an object for easier selection. I figured I could use Object.assign(), but the ID's are not helpful to me on the backend because I'm still unsure of what the ID correlates to. Ideally I'd like the ID to match the selected value. How can I go about making the object key values match with the actual values?

The code looks sort of like this

function addFeature() {
    var confirm0 = document.getElementById("featureName").value;
    var select1 = document.getElementById("acctlist");
    var selected1 = []
    for (var i = 0; i < select1.length; i++) {
      if (select1.options[i].selected)
        selected1.push(select1.options[i].value);
    }
    var object = Object.assign({}, select1);

    var data = { featureName: confirm0, selectedAccts: object};

edited Apr 06 '20 at 16:53

asked Apr 06 '20 at 16:03

Robert

Please add the `html code` along with desired output. – random Apr 06 '20 at 16:05
What is `data1`? – Barmar Apr 06 '20 at 16:07
You can use `object[select1.options[i].value] = select1.options[i].value;` – Barmar Apr 06 '20 at 16:08
@Barmar sorry that a typo, I added the correct variable. – Robert Apr 06 '20 at 16:53
@Barmar maybe I'm not doing it right, but that doesn't seem to resolve the issue. I get the below error. ```addfeature.js:13 Uncaught TypeError: Cannot set property 'foo' of undefined at addFeature (addfeature.js:13) at HTMLButtonElement.onclick (om_addfeature.html:151) addFeature @ addfeature.js:13 onclick @ om_addfeature.html:151``` – Robert Apr 06 '20 at 18:15
Did you create the object before trying to set its property? `var object = {};` – Barmar Apr 06 '20 at 19:29
`select1` is the DOM element, I don't think you want to use that in `Object.assign()`. – Barmar Apr 06 '20 at 19:30
Ah that was it @Barmar. Thanks! – Robert Apr 07 '20 at 14:37

Javascript variable from array as the object key

0 Answers0