我有一个Voronoi树形图，并希望在鼠标悬停时更改多边形的厚度。
一切都很好，但在几乎所有多边形中，一些受影响的边缘具有不同的厚度，尽管所有内容都应该是相同的笔触宽度。
有些多边形似乎按预期工作。
有谁知道是什么原因引起的？
$("polygon[hierarchy=lvl3]")
.mouseenter(function () {
$(this)
.css("stroke-width", 12);
})
.mouseleave(function () {
$(this)
.css("stroke-width", 2);
});
答案 0 :(得分：2)
多边形实际上呈现12px笔划;问题是堆叠顺序。使用HTML，我们通过指定z-index来解决这个问题。但是，在SVG中，它完全基于渲染的顺序（参见How to use z-index in svg elements?）。
要解决这个问题，在代码中，您可以简单地将悬停在SVG文档末尾的那个附加到其上，然后重新渲染它。请参阅下面的演示：
$(document).ready(function () {
$("polygon[hierarchy=lvl3]")
.mouseenter(function () {
$(this)
.css("stroke-width", 12)
.appendTo("svg");
})
.mouseleave(function () {
$(this)
.css("stroke-width", 2);
});
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
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答案 1 :(得分：1)
问题不在于笔划/边缘本身，而是周围的多边形隐藏了悬停多边形的部分笔划。您可以通过隐藏兄弟姐妹来确认这一点（下面的测试）：
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//add mouseover event
$("polygon[hierarchy=lvl3]")
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$(this).siblings().hide();
$(this)
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});
})
.mouseleave(function() {
$(this).siblings().show();
$(this)
.css({
"stroke-width": 2
});
});
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
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