How to add a tooltip to a div-第3页回答

I have a div tag as follows:

<html>
    <head></head>
    <body>
        <div>
            <label>Name</label>
            <input type="text"/>
        </div>
    </body>
</html>

Now I want a simple javascript for displaying a tooltip on :hover the div. Can someone please help me out? The tooltip should also have a fade in/out effect.

标签： javascript html css css3 tooltip

25条回答

傲

2楼-- · 2019-01-03 01:16

It can be done with CSS only, no javascript at all : running demo

Apply a custom HTML attribute, eg. tooltip="bla bla" to your object (div or whatever):
```
<div tooltip="bla bla">
    something here
</div>
```
Define the :before pseudoelement of each [tooltip] object to be transparent, absolutely positioned and with tooltip="" value as content:
```
[tooltip]:before {            
    position : absolute;
     content : attr(tooltip);
     opacity : 0;
}
```
Define :hover:before hovering state of each [tooltip] to make it visible:
```
[tooltip]:hover:before {        
    opacity : 1;
}
```
Apply your styles (color, size, position etc) to the tooltip object; end of story.

In the demo I've defined another rule to specify if the tooltip must disappear when hovering over it but outside of the parent, with another custom attribute, tooltip-persistent, and a simple rule:

[tooltip]:not([tooltip-persistent]):before {
    pointer-events: none;
}

Note 1: The browser coverage for this is very wide, but consider using a javascript fallback (if needed) for old IE.

Note 2: an enhancement may be adding a bit of javascript to calculate the mouse position and add it to the pseudo elements, by changing a class applied to it.

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Luminary・发光体

3楼-- · 2019-01-03 01:17

How about this , sorry code is not optimized cause im in a hurry , but i guess you will get the idea :

http://jsfiddle.net/prollygeek/1b0Lrr8d/

//Auxiliary functions
function createToolTip(divName,tips)
{
 document.getElementById(divName).innerHTML+='<div class="tooltip">'+tips+'</div>' 
}
function removeToolTip(divName)
{
document.getElementById(divName).removeChild( document.getElementById(divName).getElementsByClassName("tooltip")[0])
}
function Tooltip(divName,tips)
{
document.getElementById(divName).onmouseover=function(){createToolTip(divName,tips)}

document.getElementById(divName).onmouseout=function(){removeToolTip(divName)}
}

//Sample Usage
Tooltip("mydiv","hello im a tip div")

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我命由我不由天

4楼-- · 2019-01-03 01:18

You don't need JavaScript for this at all; just set the title attribute:

<html><head></head>
<body>
<div title="Hello, World!">
<label>Name</label>
<input type="text"/>
</div>
</body>
</html>

Note that the visual presentation of the tooltip is browser/OS dependent, so it might fade in and it might not. However, this is the semantic way to do tooltips, and it will work correctly with accessibility software like screen readers.

See:

<div title="Hello, World!">
<label>Name</label>
<input type="text"/>
</div>

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Fickle 薄情

5楼-- · 2019-01-03 01:20

I have developed three type fade effects :

/* setup tooltips */
    .tooltip {
      position: relative;
    }
    .tooltip:before,
    .tooltip:after {
      display: block;
      opacity: 0;
      pointer-events: none;
      position: absolute;
    }
    .tooltip:after {
    	border-right: 6px solid transparent;
    	border-bottom: 6px solid rgba(0,0,0,.75); 
      border-left: 6px solid transparent;
      content: '';
      height: 0;
        top: 20px;
        left: 20px;
      width: 0;
    }
    .tooltip:before {
      background: rgba(0,0,0,.75);
      border-radius: 2px;
      color: #fff;
      content: attr(data-title);
      font-size: 14px;
      padding: 6px 10px;
        top: 26px;
      white-space: nowrap;
    }

    /* the animations */
    /* fade */
    .tooltip.fade:after,
    .tooltip.fade:before {
      transform: translate3d(0,-10px,0);
      transition: all .15s ease-in-out;
    }
    .tooltip.fade:hover:after,
    .tooltip.fade:hover:before {
      opacity: 1;
      transform: translate3d(0,0,0);
    }

    /* expand */
    .tooltip.expand:before {
      transform: scale3d(.2,.2,1);
      transition: all .2s ease-in-out;
    }
    .tooltip.expand:after {
      transform: translate3d(0,6px,0);
      transition: all .1s ease-in-out;
    }
    .tooltip.expand:hover:before,
    .tooltip.expand:hover:after {
      opacity: 1;
      transform: scale3d(1,1,1);
    }
    .tooltip.expand:hover:after {
      transition: all .2s .1s ease-in-out;
    }

    /* swing */
    .tooltip.swing:before,
    .tooltip.swing:after {
      transform: translate3d(0,30px,0) rotate3d(0,0,1,60deg);
      transform-origin: 0 0;
      transition: transform .15s ease-in-out, opacity .2s;
    }
    .tooltip.swing:after {
      transform: translate3d(0,60px,0);
      transition: transform .15s ease-in-out, opacity .2s;
    }
    .tooltip.swing:hover:before,
    .tooltip.swing:hover:after {
      opacity: 1;
      transform: translate3d(0,0,0) rotate3d(1,1,1,0deg);
    }

    /* basic styling: has nothing to do with tooltips: */
    h1 {
      padding-left: 50px;
    }
    ul {
      margin-bottom: 40px;
    }
    li {
      cursor: pointer; 
      display: inline-block; 
      padding: 0 10px;
    }

 <h1>FADE</h1>

      <div class="tooltip fade" data-title="Hypertext Markup Language">
      <label>Name</label>
      <input type="text"/>
      </div>
      

    <h1>EXPAND</h1>

      <div class="tooltip expand" data-title="Hypertext Markup Language">
      <label>Name</label>
      <input type="text"/>
      </div>
      

    <h1>SWING</h1>

      <div class="tooltip swing" data-title="Hypertext Markup Language"> 
      <label>Name</label>
      <input type="text"/>
      </div>

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We Are One

6楼-- · 2019-01-03 01:21

Here's a nice jQuery Tooltip:

https://jqueryui.com/tooltip/

To implement this, just follow these steps:

Add this code in your <head></head> tags:

<script type="text/javascript" src="http://cdn.jquerytools.org/1.2.5/full/jquery.tools.min.js"></script>    
<script type="text/javascript">
$("[title]").tooltip();
</script> 
<style type="text/css"> 

/* tooltip styling. by default the element to be styled is .tooltip  */
.tooltip {
    display:none;
    background:transparent url(https://dl.dropboxusercontent.com/u/25819920/tooltip/black_arrow.png);
    font-size:12px;
    height:70px;
    width:160px;
    padding:25px;
    color:#fff;
}
</style>

On the HTML elements that you want to have the tooltip, just add a title attribute to it. Whatever text is in the title attribute will be in the tooltip.

Note: When JavaScript is disabled, it will fallback to the default browser/operating system tooltip.

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Viruses.

7楼-- · 2019-01-03 01:21

You can try bootstrap tooltips.

$(function () {
  $('[data-toggle="tooltip"]').tooltip()
})

How to add a tooltip to a div

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