Html 如何向 span 元素添加工具提示?
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How do I add a tool tip to a span element?
提问by MichaelICE
In the following code, I want a tool-tip to come up when the user hovers the span, how do I do that? I don't want to use any links.
在下面的代码中,我希望在用户悬停跨度时出现一个工具提示,我该怎么做?我不想使用任何链接。
<span> text </span>
回答by RichieHindle
Here's the simple, built-in way:
这是简单的内置方式:
<span title="My tip">text</span>
That gives you plain text tooltips. If you want rich tooltips, with formatted HTML in them, you'll need to use a library to do that. Fortunately there are loads of those.
这为您提供纯文本工具提示。如果你想要丰富的工具提示,其中包含格式化的 HTML,你需要使用一个库来做到这一点。幸运的是,有很多这样的。
回答by Josh Crozier
Custom Tooltips with pure CSS - no JavaScript needed:
使用纯 CSS 的自定义工具提示 - 不需要 JavaScript:
Example here (with code)/ Full screen example
此处示例(带代码)/全屏示例
As an alternative to the default title
attribute tooltips, you can make your own custom CSS tooltips using :before
/:after
pseudo elementsand HTML5 data-*
attributes.
作为默认title
属性工具提示的替代方法,您可以使用:before
/:after
伪元素和 HTML5data-*
属性制作自己的自定义 CSS 工具提示。
Using the provided CSS, you can add a tooltip to an element using the data-tooltip
attribute.
使用提供的 CSS,您可以使用data-tooltip
属性向元素添加工具提示。
You can also control the position of the custom tooltip using the data-tooltip-position
attribute (accepted values: top
/right
/bottom
/left
).
您还可以控制自定义的位置提示使用data-tooltip-position
属性(接受的值:top
/ right
/ bottom
/ left
)。
For instance, the following will add a tooltop positioned at the bottom of the span element.
例如,下面将添加一个位于 span 元素底部的工具顶部。
<span data-tooltip="Custom tooltip text." data-tooltip-position="bottom">Custom bottom tooltip.</span>
How does this work?
这是如何运作的?
You can display the custom tooltips with pseudo elements by retrieving the custom attribute values using the attr()
function.
您可以通过使用该attr()
函数检索自定义属性值来显示带有伪元素的自定义工具提示。
[data-tooltip]:before {
content: attr(data-tooltip);
}
In terms of positioning the tooltip, just use the attribute selectorand change the placement based on the attribute's value.
在定位工具提示方面,只需使用属性选择器并根据属性值更改位置。
Example here (with code)/ Full screen example
此处示例(带代码)/全屏示例
Full CSS used in the example- customize this to your needs.
示例中使用的完整 CSS- 根据您的需要自定义它。
[data-tooltip] {
display: inline-block;
position: relative;
cursor: help;
padding: 4px;
}
/* Tooltip styling */
[data-tooltip]:before {
content: attr(data-tooltip);
display: none;
position: absolute;
background: #000;
color: #fff;
padding: 4px 8px;
font-size: 14px;
line-height: 1.4;
min-width: 100px;
text-align: center;
border-radius: 4px;
}
/* Dynamic horizontal centering */
[data-tooltip-position="top"]:before,
[data-tooltip-position="bottom"]:before {
left: 50%;
-ms-transform: translateX(-50%);
-moz-transform: translateX(-50%);
-webkit-transform: translateX(-50%);
transform: translateX(-50%);
}
/* Dynamic vertical centering */
[data-tooltip-position="right"]:before,
[data-tooltip-position="left"]:before {
top: 50%;
-ms-transform: translateY(-50%);
-moz-transform: translateY(-50%);
-webkit-transform: translateY(-50%);
transform: translateY(-50%);
}
[data-tooltip-position="top"]:before {
bottom: 100%;
margin-bottom: 6px;
}
[data-tooltip-position="right"]:before {
left: 100%;
margin-left: 6px;
}
[data-tooltip-position="bottom"]:before {
top: 100%;
margin-top: 6px;
}
[data-tooltip-position="left"]:before {
right: 100%;
margin-right: 6px;
}
/* Tooltip arrow styling/placement */
[data-tooltip]:after {
content: '';
display: none;
position: absolute;
width: 0;
height: 0;
border-color: transparent;
border-style: solid;
}
/* Dynamic horizontal centering for the tooltip */
[data-tooltip-position="top"]:after,
[data-tooltip-position="bottom"]:after {
left: 50%;
margin-left: -6px;
}
/* Dynamic vertical centering for the tooltip */
[data-tooltip-position="right"]:after,
[data-tooltip-position="left"]:after {
top: 50%;
margin-top: -6px;
}
[data-tooltip-position="top"]:after {
bottom: 100%;
border-width: 6px 6px 0;
border-top-color: #000;
}
[data-tooltip-position="right"]:after {
left: 100%;
border-width: 6px 6px 6px 0;
border-right-color: #000;
}
[data-tooltip-position="bottom"]:after {
top: 100%;
border-width: 0 6px 6px;
border-bottom-color: #000;
}
[data-tooltip-position="left"]:after {
right: 100%;
border-width: 6px 0 6px 6px;
border-left-color: #000;
}
/* Show the tooltip when hovering */
[data-tooltip]:hover:before,
[data-tooltip]:hover:after {
display: block;
z-index: 50;
}
回答by Brian Arnold Sinclair
In most browsers, the title attribute will render as a tooltip, and is generally flexible as to what sorts of elements it'll work with.
在大多数浏览器中,title 属性将呈现为工具提示,并且对于它将使用的元素类型通常是灵活的。
<span title="This will show as a tooltip">Mouse over for a tooltip!</span>
<a href="http://www.stackoverflow.com" title="Link to stackoverflow.com">stackoverflow.com</a>
<img src="something.png" alt="Something" title="Something">
All of those will render tooltips in most every browser.
所有这些都将在大多数浏览器中呈现工具提示。
回答by Abk
For the basic tooltip, you want:
对于基本工具提示,您需要:
<span title="This is my tooltip"> Hover on me to see tooltip! </span>