D3.js selection.enter() Function
Last Updated :
17 Aug, 2020
The d3.selection.enter() function in D3.js is used to create the missing elements and return the enter selection.
Syntax:
selection.enter();
Parameters: This function does not accept any parameter.
Return Values: This function returns the enter selection.
Below examples illustrate the D3.js selection.enter() function in JavaScript:
Example1:
HTML
<!DOCTYPE html>
< html lang = "en" >
< head >
< meta charset = "UTF-8" />
< meta
name = "viewport"
path1tent=" width = device -width,
initial-scale = 1 .0"/>
< title >D3.js selection.enter() Function</ title >
</ head >
< style >
div {
background-color: green;
color: #ffffff;
width: 50px;
margin-bottom: 5px;
padding: 20px;
height: 10px;
}
</ style >
< body >
< script src =
</ script >
< script src =
</ script >
< script >
var div = d3
.select("body")
.selectAll("div")
.data(["geeks", "for", "geeks"])
.enter()
.append("div")
.text((d) => {
return d;
});
</ script >
</ body >
</ html >
|
Output:
Example 2:
HTML
<!DOCTYPE html>
< html lang = "en" >
< head >
< meta charset = "UTF-8" />
< meta
name = "viewport"
path1tent=" width = device -width,
initial-scale = 1 .0"/>
< title >D3.js selection.enter() Function</ title >
</ head >
< style >
div {
background-color: green;
color: #ffffff;
width: 50px;
margin-bottom: 5px;
padding: 20px;
height: 10px;
}
</ style >
< body >
< script src =
</ script >
< script src =
</ script >
< script >
var h2 = d3
.select("body")
.selectAll("h2")
.data(["I am from heading level 2"])
.enter()
.append("h2")
.text((d) => {
return d;
});
var span = d3
.select("body")
.selectAll("span")
.data("I am from span")
.enter()
.append("span")
.text((d) => {
return d;
});
var p = d3
.select("body")
.selectAll("p")
.data(["paragraph", "paragraph"])
.enter()
.append("p")
.text((d) => {
return d;
});
</ script >
</ body >
</ html >
|
Output:
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