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D3.js html() Function

Last Updated : 31 Aug, 2020
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The d3.html() function in d3.js is used to fetch and read the file of type HTML. It fetches the file as text first then parses the file as HTML.

Syntax:

d3.html(input[, init]);

Parameters: This function accepts two parameters as mentioned above and described below:

  • input: This parameter is the address of the input file.
  • init: This parameter takes a function.

Note: Please create a file named sample.html before going through the below given example.

Example 1: Filename: sample.html html
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content=
        "width=device-width, 
        initial-scale=1.0">
</head>

<body>
    <p>I am a p tag</p>
    <script>
        alert("This is from d3.html() function")
    </script>
</body>

</html>
Filename: index.html html
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta name="viewport" path1tent=
        "width=device-width, initial-scale=1.0"/>
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
</head>

<body>
    <script>
        d3.html("sample.html", function (d) {
            console.log(d);
        });
    </script>
</body>

</html>
Output: Example 2: Filename: sample.html html
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content=
        "width=device-width,
         initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h3>D3.js | d3.html() Function</h3>
    <p>I am a p tag</p>
</body>
</html>
Filename: index.html html
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta name="viewport" path1tent=
        "width=device-width,initial-scale=1.0"/>
</head>

<body>
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
    <script>
        d3.html("sample.html", function (d) {
            d = [].map.call(d.querySelectorAll("p"), (p) => {
                var h3 = d.querySelector("h3");
                document.write(`<h3>${h3.textContent}</h3>`);
                document.write(`<p>${p.textContent}</p>`);
            })
        });
    </script>
</body>

</html>

Output:


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