这两个差别，一目了然。
<!DOCTYPE html>
<body>
<div id="datum">
<p>Fire</p>
<p>Water</p>
<p>Wind</p>
</div>
<div id="data">
<p>Lion</p>
<p>Tiger</p>
<p>Leopard</p>
</div>
</body>
<script src="d3.v3.min.js" charset="UTF-8"></script>
<script>
var pu = d3.select("#datum").selectAll("p");
pu.datum("Thunder")
.append("span")
.text(function(d, i){
return " " + d + " " + i;
});
console.log(pu);
var dataset = [3];
var pa = d3.select("#data").selectAll("p");
var update = pa.data(dataset);
console.log(update);
console.log(update.enter());
console.log(update.exit());
</script>
原文地址：https://www.cnblogs.com/aguncn/p/12388451.html
时间： 2024-08-28 16:49:58