在 JavaScript 中共享属性
可以通过将属性附加到对象的原型属性来共享属性。这些属性将在对象的全部实例中共享。
以下是 JavaScript 中共享属性的代码 −
示例
<!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: 20px;
font-weight: 500;
color: blueviolet;
}
</style>
</head>
<body>
<h1>Shared properties in JavaScript</h1>
<div class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to the view properties of student1 and student2 objects</h3>
<script>
let resEle = document.querySelector(".result");
function Student(name, age) {
this.name = name;
this.age = age;
}
Student.prototype.school = "St Marks School";
let student1 = new Student("Rohan", 17);
let student2 = new Student("Shawn", 16);
document.querySelector(".Btn").addEventListener("click", () => {
resEle.innerHTML = `${student1.name} age ${student1.age} : school
:${student1.school} <br>`;
resEle.innerHTML += `${student2.name} age ${student2.age} : school
:${student2.school}`;
});
</script>
</body>
</html>输出

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