工具提示在鼠标悬停事件中闪烁

Question

我有一个地图，它用坐标映射以显示这样的工具提示：

var areas = document.getElementsByTagName('area');
var tooltip = document.getElementById('tooltip');
for (var i = 0; i < areas.length; i++) {
areas[i].addEventListener("mouseenter", updateTooltip);
areas[i].addEventListener("mouseleave", removeTooltip)
}
function updateTooltip() {
tooltip.style.display = "block"
tooltip.innerHTML = this.getAttribute('data-text');
var coordinates = this.getAttribute('coords').split(',')
tooltip.style.left = coordinates[0] + 'px';
tooltip.style.top = coordinates[coordinates.length - 1] + 'px';
}
function removeTooltip() {
tooltip.style.display = "none"
}

.tooltip {
position: absolute;
z-index: 9999;
border: 1px solid black;
min-width: 100px;
max-width: 150px;
background: white;
}
area {
position: relative;
}
.parent {
position: relative;
}

<div class="parent">
<img id="mapImage" src="https://i.imgur.com/Y7HuHDQ.png" usemap="#image-map">
<map name="image-map">
<area target="" data-text="USA Shops: Manchester,TN - Num: 6621418372 WIXOM ,MI - Num:662728173" alt="USA" title="USA" href="" coords="110,140,182,141,186,148,198,146,198,140,214,139,224,134,234,143,221,150,213,154,205,156,205,170,199,174,194,181,193,188,162,182,158,171,149,173,145,179,141,170,124,168,121,173,112,168,105,158" shape="poly">

<area target="" data-text="Mexico Shops: Manchester,TN - Num: 6621418372 WIXOM ,MI - Num:662728173"  alt="MEXICO" title="MEXICO" href="" coords="124,172,137,171,141,178,152,173,160,181,162,204,179,199,179,211,157,212,173,216,146,204,136,196,125,188" shape="poly">

<area target="" data-text="Japan Shops: Manchester,TN - Num: 6621418372 WIXOM ,MI - Num:662728173"  alt="JAPAN" title="JAPAN" href="" coords="705,106,716,106,721,146,687,184,667,175" shape="poly">

<area target="" data-text="Germany Shops: Manchester,TN - Num: 6621418372 WIXOM ,MI - Num:662728173"  alt="GERMANY" title="GERMANY" href="" coords="418,111,436,108,433,124,418,124" shape="poly">
<div class="tooltip" id="tooltip"></div>   
</map>
</div>

正如您在鼠标悬停中看到的那样，它显示一些工具提示，问题在美国和墨西哥工具提示闪烁很多，有人知道如何解决它吗？问候

Answer 1

这是因为一旦工具提示弹出，鼠标现在就会在工具提示上，这会触发您注册的mouseleave事件。可以通过在工具提示上添加 css 属性pointer-events:none来防止其触发事件来防止这种情况。

我在下面修改了您的示例！

var areas = document.getElementsByTagName('area');
var tooltip = document.getElementById('tooltip');
for (var i = 0; i < areas.length; i++) {
areas[i].addEventListener("mouseenter", updateTooltip);
areas[i].addEventListener("mouseleave", removeTooltip)
}
function updateTooltip() {
tooltip.style.display = "block"
tooltip.innerHTML = this.getAttribute('data-text');
var coordinates = this.getAttribute('coords').split(',')
tooltip.style.left = coordinates[0] + 'px';
tooltip.style.top = coordinates[coordinates.length - 1] + 'px';
}
function removeTooltip() {
tooltip.style.display = "none"
}

.tooltip {
position: absolute;
z-index: 9999;
border: 1px solid black;
min-width: 100px;
max-width: 150px;
background: white;

/* ADDED */
pointer-events:none;
}
area {
position: relative;
}
.parent {
position: relative;
}

<div class="parent">
<img id="mapImage" src="https://i.imgur.com/Y7HuHDQ.png" usemap="#image-map">
<map name="image-map">
<area target="" data-text="USA Shops: Manchester,TN - Num: 6621418372 WIXOM ,MI - Num:662728173" alt="USA" title="USA" href="" coords="110,140,182,141,186,148,198,146,198,140,214,139,224,134,234,143,221,150,213,154,205,156,205,170,199,174,194,181,193,188,162,182,158,171,149,173,145,179,141,170,124,168,121,173,112,168,105,158" shape="poly">

<area target="" data-text="Mexico Shops: Manchester,TN - Num: 6621418372 WIXOM ,MI - Num:662728173"  alt="MEXICO" title="MEXICO" href="" coords="124,172,137,171,141,178,152,173,160,181,162,204,179,199,179,211,157,212,173,216,146,204,136,196,125,188" shape="poly">

<area target="" data-text="Japan Shops: Manchester,TN - Num: 6621418372 WIXOM ,MI - Num:662728173"  alt="JAPAN" title="JAPAN" href="" coords="705,106,716,106,721,146,687,184,667,175" shape="poly">

<area target="" data-text="Germany Shops: Manchester,TN - Num: 6621418372 WIXOM ,MI - Num:662728173"  alt="GERMANY" title="GERMANY" href="" coords="418,111,436,108,433,124,418,124" shape="poly">
<div class="tooltip" id="tooltip"></div>   
</map>
</div>