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How to hide drop-down menu in javascript

藏色散人
藏色散人 Original
2021-07-05 14:54:10 2776browse

Javascript method to hide the drop-down menu: first create a "demo.html" and "//m.sbmmt.com/m/faq/demo.css"; then create a "//m.sbmmt.com/m/faq/demo.js"; finally pass "function hideSubMenu(li) {...} "Just hide it.

How to hide drop-down menu in javascript

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

How to hide the drop-down menu in javascript?

javascript implements display and hiding of drop-down menu

demo.html

    实现下拉菜单效果   

demo.js

function displaySubMenu(li) { var subMenu = li.getElementsByTagName("ul")[0]; subMenu.style.display = "block"; } function hideSubMenu(li) { var subMenu = li.getElementsByTagName("ul")[0]; subMenu.style.display = "none"; }

demo.css

*{ margin:0px; padding:0px;} body{ font-family:Verdana, Geneva, sans-serif; font-size:14px;} #nav{ width:600px; height:40px; background-color:#eee; margin:0 auto;} ul{ list-style:none;} ul li{ float:left; line-height:40px; text-align:center; width:100px;} a{ text-decoration:none; color:#000; display:block;} a:hover{ color:#F00; background-color:#666;} ul li ul li{ float:none;background-color:#eee; margin:2px 0px;} ul li ul{ display:none;}

Effect:

Recommended study: "javascript Advanced Tutorial"

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