我有一个这样的div标签:

<div>
  <label>Name</label>
  <input type="text"/>
</div>

我如何显示一个工具提示:div的悬停,最好有一个淡入/淡出效果。


当前回答

不使用任何API 你也可以通过使用纯CSS和Jquery演示来做这样的事情

HTML

<div class="pointer_tooltip"> 
    Click & Drag to draw the area
</div>

CSS

.pointer_tooltip{
  width : auto;
  height : auto;
  padding : 10px;
  border-radius : 5px;
  background-color : #fff;
  position: absolute;
}

Jquery

$(document).mousemove(function( event ) {
    var pageCoords = "( " + event.pageX + ", " + event.pageY + " )";   

    //set the actuall width
    $('.pointer_tooltip').width($('.pointer_tooltip').width());
    var position_top = event.pageY+18;
    var position_left = event.pageX-60;          
    var width=$('body').width()-$('.pointer_tooltip').width();

    //check if left not minus
    if(position_left<0){
      position_left=10;
    }else if(position_left > width){
     position_left=width-10;
    }       


    $('.pointer_tooltip').css('top',position_top+'px');
    $('.pointer_tooltip').css('left',position_left+'px');
});

其他回答

我开发了三种类型的褪色效果:

/* 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>

我做了一些事情,应该能够适应一个div以及。

HTML

<td>
    <%# (Eval("Name").ToString().Length > 65) ? Eval("Name").ToString().Substring(0, 60) + "..." : Eval("Name")%>
    <span class="showonhover">
        <a href="#"><%# (Eval("Name").ToString().Length > 65) ? "More" : "" %></a>
        <span class="hovertext">
            <%# Eval("Name") %>
        </span>
    </span>
</td>

CSS

.showonhover .hovertext { display: none;}
.showonhover:hover .hovertext {display: inline;}
a.viewdescription {color:#999;}
a.viewdescription:hover {background-color:#999; color: White;}
.hovertext {position:absolute;z-index:1000;border:1px solid #ffd971;background-color:#fffdce;padding:11px;width:150px;font-size: 0.75em;}

要了解更深入的讨论,请参阅我的文章:

一个简单的格式化工具提示文本悬停

你根本不需要JavaScript;只需设置title属性:

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

请注意,工具提示的可视化表示依赖于浏览器/操作系统,因此它可能会逐渐消失,也可能不会。然而,这是实现工具提示的语义方式,它可以正确地与屏幕阅读器等辅助软件一起工作。

在堆栈片段中的演示

<div title="Hello, World!"> < >标签名称> < /标签 < input type = " text " / > < / div >

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI tooltip</title>
  <link rel="stylesheet" href="http://code.jquery.com/ui/1.11.0/themes/smoothness/jquery-ui.css">
  <script src="http://code.jquery.com/jquery-1.10.2.js"></script>
  <script src="http://code.jquery.com/ui/1.11.0/jquery-ui.js"></script>  
  <script>
  $(function() {
    $("#tooltip").tooltip();
  });
  </script>
</head>
<body>
<div id="tooltip" title="I am tooltip">mouse over me</div>
</body>
</html>

您还可以自定义工具提示样式。请参阅此连结: http://jqueryui.com/tooltip/#custom-style

工具提示定位纯css

div { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); -ms-transform: translate(-50%, -50%); /* IE 9 */ -webkit-transform: translate(-50%, -50%); /* Chrome, Safari, Opera */ text-align: center; } .tooltip { position: relative; display: inline-block; border-bottom: 1px dotted black; } .tooltip .tooltiptext { visibility: hidden; width: 120px; background-color: black; color: #fff; //text-align: center; border-radius: 6px; padding: 5px 0; /* Position the tooltip */ position: absolute; z-index: 1; } .tooltip:hover .tooltiptext { visibility: visible; } .toolLeft { top: -5px; right: 105%; } .toolRight { top: -5px; left: 105%; } .toolTop { bottom: 100%; left: 50%; margin-left: -60px; } .toolBottom { top: 100%; left: 50%; margin-left: -60px; } <div> <div class="tooltip">Top <span class="tooltiptext toolTop">Tooltip text</span></div><br /> <div class="tooltip">Left <span class="tooltiptext toolLeft">Tooltip text</span></div><br /> <div class="tooltip">Right <span class="tooltiptext toolRight">Tooltip text</span></div><br /> <div class="tooltip">Bottom <span class="tooltiptext toolBottom">Tooltip text</span></div><br /> </div>