IE11 Javascript: let [array] of object.entries "SCRIPT1010: Expected identifier" error

Question

In this block of code, I'm finding the "SCRIPT1010: Expected Identifier" Error on the first line in IE11. This works perfectly in all other major browsers.

for (let [key, value] of Object.entries(CompanySettings)) {
 if (value == true) {    
   document.getElementById(key).removeAttribute("checked");
 }
 if (value == false) {
  document.getElementById(key).setAttribute("checked", "no");
 }
}

I'm assuming this is because it's an ES6 feature that's not available in IE, but I'm wondering if there's an plain old JS alternative I could use to the let.. of.. that works in IE11. I'm not really interested in adding an extra library just to get this block running.

es6 synatx is not supporting in IE

Negi Rox
– Negi Rox

2020-02-13 08:07:19 +00:00
Commented Feb 13, 2020 at 8:07 — Negi Rox
– Negi Rox, Commented Feb 13, 2020 at 8:07
teamtreehouse.com/community/…

Negi Rox
– Negi Rox

2020-02-13 08:07:46 +00:00
Commented Feb 13, 2020 at 8:07 — Negi Rox
– Negi Rox, Commented Feb 13, 2020 at 8:07
Use Babel and polyfills

adiga
– adiga

2020-02-13 08:08:31 +00:00
Commented Feb 13, 2020 at 8:08 — adiga
– adiga, Commented Feb 13, 2020 at 8:08

Nina Scholz · Accepted Answer · 2020-02-13 08:01:34Z

2

You could take a for ... in statement and iterate the keys.

for (var key in CompanySettings) {
    if (CompanySettings[key]) { // assuming true or false values
        document.getElementById(key).removeAttribute("checked");
    } else {
        document.getElementById(key).setAttribute("checked", "no");
    }
}

Maybe you need another check for not own properties

for (var key in CompanySettings) {
    if (!CompanySettings.hasOwnProperty(key)) continue;
    if (CompanySettings[key]) { // assuming true or false values
        document.getElementById(key).removeAttribute("checked");
    } else {
        document.getElementById(key).setAttribute("checked", "no");
    }
}

answered Feb 13, 2020 at 8:01

Nina Scholz

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