javascript - Alternatives of spread syntax

Question

I see several uses of spread syntax in a code. For example:

function tree2table(tree) {
    var children = tree["children"];
    if (children === undefined) return [];
    var result = [];
    for (var i = 0; i < children.length; i++) {
        var child = children[i];
        var link = [child["name"], tree["name"], child["size"]];
        result.push(link);
        result.push(...tree2table(child))
    }
    return result
}

However, spread syntax is not supported in IE. Does anyone know what is the best way to change result.push(...tree2table(child)) such that it becomes cross-browser and as efficient as before?

Answer 1

You could use function#apply, which takes the parameters as array.

The apply() method calls a function with a given this value, and arguments provided as an array (or an array-like object).

Array.prototype.push.apply(result, tree2table(child));