日期:2014-05-16 浏览次数:20572 次
三种方案:
.append("title")
.text(function(d){
return "This Value Is "+d.value;
});
.on("mouseover",function(d){
var xPosition=parseFloat(d3.select(this).attr("x"))+xScale.rangeBand()/2;
var yPosition=parseFloat(d3.select(this).attr("y"))+24;
svg.append("text")
.attr("id","tooltip")//设置id便于移除提示
.attr("x",xPosition)
.attr("y",yPosition)
.attr("text-anchor","middle")
.attr("font-family","sans-setif")
.attr("font-size","11px")
.attr("font-weight","bold")
.attr("fill","white")
.text(d.value);
})
.on("mouseout",function(){
d3.select("#tooltip").remove();//ID 选择的语法:"#tooltip"
})
<div id="tooltip" class="hildden">
<p><strong>提示:</strong></p>
<p><span id="value">100</span>%</p>
</div>
#tooltip {
position:absolute;
width:200px;
height:auto;
padding:10px;
background-color:white;
-webkit-border-radius:10px;
-moz-border-radius:10px;
border-radius:10px;
-webkit-box-shadow:4px 4px 10px rgba(0,0,0,0.4);
-moz-box-shadow:4px 4px 10px rgba(0,0,0,0.4);
box-shadow:4px 4px 10px rgba(0,0,0,0.4);
pointer-events:none;
}
#tooltip.hidden{
display:none;
}
#tooltip p{
margin:0;
font-family:sans-serif;
font-size:16px;
line-height:20px;
}
.on("mouseover",function(d){
//取得提示显示的位置
var xPosition=parseFloat(d3.select(this).attr("x"))+xScale.rangeBand()/2;
var yPosition=parseFloat(d3.select(this).attr("y"))/2+h/2;
d3.select("#tooltip")
.style("left",xPosition+"px")
.style("top",yPosition+"px")
.select("#value")
.text(d.value);
})
//移除提示条SVG
.on("mouseout",function(){
d3.select("#tooltip").classed("hidden",true);//ID 选择的语法:"#tooltip"
})
;
但是最后没有出现预想的效果,不知道为什么
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>testD3-18-update.html</title> <script type="text/javascript" src="http://localhost:8080/spring/js/d3.v3.js"></script> <