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D3.js html() Function
  • Last Updated : 31 Aug, 2020

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






<!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




<!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 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




<!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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