e 1 년 전
부모
커밋
1875312506
3개의 변경된 파일66개의 추가작업 그리고 0개의 파일을 삭제
  1. 12 0
      JS初级/DOM/3.onload.html
  2. 5 0
      JS初级/DOM/3.onload.js
  3. 49 0
      JS初级/DOM/4.倒计时.html

+ 12 - 0
JS初级/DOM/3.onload.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+    <script src="./3.onload.js"></script>
+    <div id="main">这是一段话</div>
+</body>
+</html>

+ 5 - 0
JS初级/DOM/3.onload.js

@@ -0,0 +1,5 @@
+window.onload = function () {
+  // 等所有的东西全部加载完毕,再去执行里面的内容
+  var main = document.getElementById("main");
+  console.log(main);
+};

+ 49 - 0
JS初级/DOM/4.倒计时.html

@@ -0,0 +1,49 @@
+<!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>
+      p {
+        width: 400px;
+        height: 300px;
+        border: 1px solid #000;
+        text-align: center;
+        line-height: 300px;
+        margin: 190px auto;
+        font-size: 24px;
+      }
+      p span {
+        color: red;
+      }
+    </style>
+  </head>
+  <body>
+    <p>
+      倒计时:<span>0</span>天<span>0</span>小时<span>0</span>分<span>0</span>秒
+    </p>
+    <script>
+      // innerText 添加内容文本
+      var spans = document.querySelectorAll("span");
+      // 结束时间戳
+      var endTime = new Date("2024-2-9 12:00").getTime();
+      // 开始时间戳
+      var beginTime = new Date().getTime();
+      // 相差的秒数 => 秒数的时间戳
+      var diffTime = (endTime - beginTime) / 1000;
+      // 天
+      var day = parseInt(diffTime / 60 / 60 / 24);
+      // 时
+      var hours = parseInt((diffTime / 60 / 60) % 24);
+      // 分 
+      var minutes = parseInt((diffTime / 60) % 60);
+      // 秒
+      var seconds = parseInt(diffTime % 60);
+      spans[0].innerText = day;
+      spans[1].innerText = hours;
+      spans[2].innerText = minutes;
+      spans[3].innerText = seconds;
+    </script>
+  </body>
+</html>