js 求两点距离

function calculateDistance(pointA, pointB) {
    var x1 = pointA.x, y1 = pointA.y;
    var x2 = pointB.x, y2 = pointB.y;
    var dx = x2 - x1;
    var dy = y2 - y1;
    return Math.sqrt(dx * dx + dy * dy);
}

// 使用示例
var pointA = {x: 1, y: 2};
var pointB = {x: 4, y: 6};
console.log(calculateDistance(pointA, pointB)); // 输出两点之间的距离

function calculate3DDistance(pointA, pointB) {
    var x1 = pointA.x, y1 = pointA.y, z1 = pointA.z;
    var x2 = pointB.x, y2 = pointB.y, z2 = pointB.z;
    var dx = x2 - x1;
    var dy = y2 - y1;
    var dz = z2 - z1;
    return Math.sqrt(dx * dx + dy * dy + dz * dz);
}

// 使用示例
var pointA3D = {x: 1, y: 2, z: 3};
var pointB3D = {x: 4, y: 6, z: 8};
console.log(calculate3DDistance(pointA3D, pointB3D)); // 输出两点之间的距离