Separating Axis Theorem Polygon in Axis Projection

sat_5.js

polygon.projectInAxis = function(x, y) {
    let min = 10000000000;
    let max = -10000000000;
    for (let i = 0; i < polygon.vertices.length; i++) {
        let px = polygon.vertices[i].x;
        let py = polygon.vertices[i].y;
        var projection = (px * x + py * y) / (Math.sqrt(x * x + y * y));
        if (projection > max) {
            max = projection;
        }
        if (projection < min) {
            min = projection;
        }
    }
    return { min, max };
};

Thanks for your comment. Is most correct to use this way with MAX and MIN instead of some larger number (my original and fast created solution).