Simple example based on scroll bar position judgment_javascript skills

The editor below will share with you a simple example based on scroll bar position judgment. The power ofJavaScriptis obvious to all, so you can learnJavaScript## well. How important # is, friends who are interested inJavaScript, please follow the editor to have a look

The example is as follows:

//获取滚动条距离顶部位置 function getScrollTop() { var scrollTop = 0; if (document.documentElement && document.documentElement.scrollTop) { scrollTop = document.documentElement.scrollTop; } else if (document.body) { scrollTop = document.body.scrollTop; } return scrollTop; } //获取当前可视范围的高度 function getClientHeight() { var clientHeight = 0; if (document.body.clientHeight && document.documentElement.clientHeight) { clientHeight = Math.min(document.body.clientHeight, document.documentElement.clientHeight); } else { clientHeight = Math.max(document.body.clientHeight, document.documentElement.clientHeight); } return clientHeight; } //获取文档完整的高度 function getScrollHeight() { return Math.max(document.body.scrollHeight, document.documentElement.scrollHeight); } //判断滚动条是否达到底部 getScrollTop() + getClientHeight() == getScrollHeight()

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