I have sample code that works fine in Chrome but IE11 has problem because of Object.assign method and => sign.
Here is my code below and I don't know how to design it for IE11:
let dictionary = Object.assign({}, ...tempGroups[tempKey].map((x) => ({ [x.ID]: x.Value })));
Thanks for helping.
Object.assign is not suppported for IE-11. Try to replicate that using a loop since you are using map anyways.
Also instead of arrow functions you can use normal functions.
let dictionary = {};
tempGroups[tempKey].forEach(
function(x) {
dictionary[x.ID] = x.Value;
});