我已经编写了一个网页,您可以在其中将鼠标悬停在图像的某些部分上,如果您这样做,则会弹出带有链接的文本字段。此功能已在 JavaScript 中实现。
弹出文本框在IE11中显示,但在Safari或Chrome中不显示(启用了JavaScript,因此这不会导致问题(。有人知道解决此问题以使其在Safari和Chrome上运行吗?
相关代码在这里:
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="../Rules.css" />
</head>
<body>
<p>
By hovering over the below links should pop up in light yellow boxes.
</p>
<p>
<map id="OMMap" name="OMMap">
<area href="../2/CCEP general.htm" shape="rect" coords="0, 0, 1531, 18"/>
<area href="../2/CCEP general.htm" shape="rect" coords="151, 133, 301, 170"/>
<area href="../2/CCEP general.htm" shape="rect" coords="302, 284, 453, 321"/>
<area href="../2/CCEP general.htm" shape="rect" coords="454, 435, 604, 472"/>
<area href="../2/CCEP general.htm" shape="rect" coords="1247, 643, 1398, 680"/>
</map>
<div style="position:relative">
<img onmouseover="ResetAllMenus()" src="OM.gif" usemap="#OMMap"
width="1531px"
height="851px" />
<div style="position:absolute; left:152px; top: 200px">
<span onmouseover="MakeVisible('PD2')"> <b>PD2</b> Preliminary Design </span>
</div>
<div id="PD2" class="OMLinks" style="top:215px; left:166px">
<a href="../3/PD.htm"> PD2 State-Wide</a>
</div>
</div>
</div>
<script>
function MakeVisible(element){
ResetAllMenus()
// Find the element and unhide it.
var element = document.getElementById(element)
element.style.display = "block"
}
function ResetAllMenus() {
// Get an array with div elements.
var links = document.getElementsByTagName("div")
// Search the array for OMLink boxes, and hide them.
for (var j = 0; j<links.length; j++) {
if(links[j].className =='OMLinks') links[j].style.display = "none"
}
}
</script>
</body>
</html>
悬停事件从带有 MakeVisible 的链接冒泡到具有 ResetAllMenu 的父级的鼠标悬停侦听器,因此显示"对话框"然后再次隐藏。
您需要将事件传递给侦听器,并从链接鼠标悬停停止传播。它可能在 IE 中工作,因为侦听器的调用顺序不同。
此外,按照惯例,以大写字母开头的函数名称是为构造函数保留的,因此首选 makeVisible 和 resetAllMenus。
下面是重构为示例的代码。
function makeVisible(element, event) {
event.stopPropagation();
resetAllMenus();
// Find the element and unhide it.
var element = document.getElementById(element);
element.style.display = '';
}
function resetAllMenus() {
// Get an array with div elements.
var links = document.getElementsByTagName("div");
// Search the array for OMLink boxes, and hide them.
for (var j = 0; j < links.length; j++) {
if (links[j].className == 'OMLinks') {
links[j].style.display = "none";
}
}
}
.OMLinks {
background-color: yellow;
}
<p>By hovering over the below links should pop up in light yellow boxes.</p>
<div onmouseover="resetAllMenus()">
<p> reset div </p>
<div><span onmouseover="makeVisible('PD2', event)"><b>PD2</b> Preliminary Design </span>
</div>
<div id="PD2" class="OMLinks">
<a href="../3/PD.htm"> PD2 State-Wide</a>
</div>
</div>