JavaScript 全局属性

javascriptweb developmentobject oriented programming更新于 2025/12/11 6:36:17

JavaScript 中的全局属性根据是否设置了‘g’修饰符返回 true 或 false。

以下是 JavaScript 全局属性的代码 −

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;
   }
   .sample,.result {
      font-size: 18px;
      font-weight: 500;
   }
</style>
</head>
<body>
<h1>JavaScript global Property</h1>
<div class="sample">Some random text inside a div<br></div>
<div style="color:red" class="result"></div>
<button class="btn">点击此处</button>
<h3>
Click on the above button to check if the 'g' modifier is set or not
</h3>
<script>
   let sampleEle = document.querySelector(".result");
   let pattern = /random/g;
   let result = pattern.global;
   document.querySelector(".Btn").addEventListener("click", () => {
      if(result) sampleEle.innerHTML += 'The g modifier has been set';
      else sampleEle.innerHTML += 'The g modifier has not been set';
   });
</script>
</body>
</html>