ต่อไปนี้เป็นรหัสเพื่อเข้าถึงวัตถุผ่านวัตถุอื่นใน JavaScript -
ตัวอย่าง
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.result {
font-size: 18px;
font-weight: 500;
color: rebeccapurple;
}
</style>
</head>
<body>
<h1>Access an object through another object in JavaScript</h1>
<div class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to display obj2</h3>
<script>
let resEle = document.querySelector(".result");
let BtnEle = document.querySelector(".Btn");
let obj = {
firstName: "Rohan",
lastName: "Sharma",
welcome() {
return "Welcome " + this.firstName + " " + this.lastName;
},
};
let obj2 = {
firstName: "Mohit",
lastName: obj.lastName,
welcomeString: obj.welcome(),
};
BtnEle.addEventListener("click", () => {
resEle.innerHTML = "obj2.firstName = " + obj2.firstName + "<br>";
resEle.innerHTML += "obj2.lastName = " + obj2.lastName + "<br>";
resEle.innerHTML += "obj2.welcomeString = " + obj2.welcomeString + "<br>";
});
</script>
</body>
</html> ผลลัพธ์
รหัสข้างต้นจะสร้างผลลัพธ์ต่อไปนี้ -
เมื่อคลิกปุ่ม 'คลิกที่นี่' -
