JavaScript - 从 URL 中知道 GET 参数的值

javascriptweb developmentobject oriented programming更新于 2025/12/11 9:16:17

在 JavaScript 中从 URL 中知道 GET 参数的值，代码如下 −

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 {
      font-size: 18px;
      font-weight: 500;
      color: red;
   }
</style>
</head>
<body>
<h1>GET parameters from URL</h1>
<div class="sample">https://www.google.com?imageSize=440&color=blue</div>
<div style="font-weight: bold;" class="result"></div>
<button class="btn">点击此处</button>
<h3>
Click on the above button to get the imageSize and color value from the above URL
</h3>
<script>
   let sampleEle = document.querySelector(".sample");
   let resultEle = document.querySelector(".result");
   var url = new URL(sampleEle.innerText);
   var urlParams = url.searchParams;
   var imageSize = urlParams.get("imageSize");
   var color = urlParams.get("color");
   document.querySelector(".Btn").addEventListener("click", () => {
      resultEle.innerHTML += 'Image size = ' + imageSize + '<br>' + 'Image color = ' + color;
   });
</script>
</body>
</html>