官网:
http://d3js.org/
范例:
https://github.com/mbostock/d3/wiki/Gallery
引用:
//在线引用 <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> //或下载到本地 <head> <meta charset="utf-8"> <title>D3.js galance</title> <script src="d3.min.js"></script> </head>
开始:
<body> <p id=‘target‘></p> <script type="text/javascript"> d3.select("p#target").text("Hello World!"); </script> </body>
d3.select实现单个元素选取
select.attr,读取/设置元素属性
<p id=‘target‘></p> <script type="text/javascript"> var res=d3.select("p#target").attr("id"); document.write(res); </script> //结果为target
<p></p> <script type="text/javascript"> d3.select("p").attr("id","p1"); var res=d3.select("p").attr("id"); document.write(res); </script> //将p的id设为p1,并输出p的id
select.classed,添加/删除元素类
<p class="p1"></p> <script type="text/javascript"> var res=d3.select("p").classed("p1"); document.write(res); </script> //检测该元素是否属于p1类,返回布尔值
<p></p> <script type="text/javascript"> var res=d3.select("p").classed("p1",true); </script> //为P标签添加p1这个类
<p class="p1"></p> <script type="text/javascript"> d3.select("p").classed("p1",function(){return false;}); var res=d3.select("p").classed("p1"); document.write(res); </script>//为P标签移除p1这个类
时间: 2024-12-20 00:01:01