Cannot push a array in js

[tpbook]

Not able to push to an empty array. It gives "[] is not a function". How to push into an array?

[stevenhdsdoor]

This is working in one of my apps, could be the lack of semicolon? You are starting on line 19 so its hard to tell.

let datascan = scan.data.Items
let datafiltered = [];

if (switch1.value == true)
{
for (let i = 0; i < scan.data.Count; i++) {
if (datascan[i].backgroundColor == "") {
datafiltered.push(datascan[i]);
}
}
}

if (switch2.value == true) {
for (let i = 0; i < scan.data.Count; i++) {
if (datascan[i].backgroundColor == "green") {
datafiltered.push(datascan[i]);
}
}
}

if(switch3.value == true) {
for (let i = 0; i < scan.data.Count; i++) {
if (datascan[i].backgroundColor == "blue") {
datafiltered.push(datascan[i]);
}
}
}

return(datafiltered)