语言►JavaScript►window

JavaScript中的window.scrollBy

本文作者: jsweibo

本文链接: https://jsweibo.github.io/2020/04/16/JavaScript%E4%B8%AD%E7%9A%84window-scrollBy/

摘要

本文主要讲述了：

  1. 作用
  2. 参数

正文

作用

滚动页面

示例：每次点击屏幕，滚动left=0, top=100

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no"
    />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
  </head>
  <body>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
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    <script>
      window.addEventListener('click', function () {
        scrollBy(0, 100);
      });
    </script>
  </body>
</html>

示例：每次点击屏幕，平滑滚动left=0, top=100

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no"
    />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
  </head>
  <body>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
    <h1>jsweibo.github.io</h1>
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    <script>
      window.addEventListener('click', function () {
        scrollBy({
          left: 0,
          top: 100,
          behavior: 'smooth',
        });
      });
    </script>
  </body>
</html>

参数

scroll()的参数有两种规格：一种是传递 2 个数值（X 坐标、Y 坐标），另一种是传递 1 个ScrollByOptions实例

left

表示距离页面左侧的距离，即 X 坐标

top

表示距离页面顶部的距离，即 Y 坐标

ScrollByOptions

滚动到选项对象

包含 3 个属性，分别是left、top、behavior

behavior

表示滚动效果

取值范围为：

  • smooth Firefox 支持，但 Chrome 和 Edg 不支持
  • auto

默认值为auto

参考资料

本文作者: jsweibo

本文链接: https://jsweibo.github.io/2020/04/16/JavaScript%E4%B8%AD%E7%9A%84window-scrollBy/

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