找出点是否位于矩形内

function isPointInsideRectangle(pointX, pointY, rectX1, rectY1, rectX2, rectY2) {
  if (pointX >= rectX1 && pointX <= rectX2 && pointY >= rectY1 && pointY <= rectY2) {
    return true;
  } else {
    return false;
  }
}

// 示例使用
var pointX = 3;
var pointY = 4;
var rectX1 = 1;
var rectY1 = 2;
var rectX2 = 5;
var rectY2 = 6;

if (isPointInsideRectangle(pointX, pointY, rectX1, rectY1, rectX2, rectY2)) {
  console.log("点位于矩形内");
} else {
  console.log("点不位于矩形内");
}