编程学习网为您整理以下代码实例，主要实现：D3.js datum()用法，希望可以帮到各位朋友。
<!DOCTYPE HTML>
<HTML>
<head>
<script type = "text/JavaScript" src = "https://d3Js.org/d3.v4.min.Js"></script>
</head>
<body>
<p></p>
<div></div>
<script>
d3.select("p")
.datum(50)
.text(function(d) {
return "Used existing paragraph element and the data " + d + " is assigned.";
});
d3.select("div")
.datum(100)
.append("p")
.text(function(d) {
return "Created new paragraph element and the data " + d + " is assigned.";
});
</script>
</body>
</HTML>
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