D3.js | d3.utcFriday Function

The d3.utcFriday function in D3.js is used to return all the dates based on Friday in the given range of start and end date in Coordinated Universal Time (UTC).

Syntax:

d3.utcFriday.range( start, end, step );

Parameters: This function accept three parameters which are given below:

Start: This parameter holds the given start date.
end: This parameter holds the given end date.
step: It is the optional parameter and the value is used to skip the dates.

Return Value: This function returns all the dates based on friday.

Below programs illustrate the d3.utcFriday function in D3.js:

Example 1:

<!DOCTYPE html> 
<html> 

<head> 

    <title> 

        D3.js | d3.utcFriday Function 

    </title> 

    <script src =  

        "https://d3js.org/d3.v4.min.js"> 

    </script> 
</head> 

<body> 

    <script> 

        // Initialising start and end date 

        var start = new Date(2015, 07, 01); 

        var end = new Date(2015, 07, 30); 

        // Calling the utcFriday function 

        // without step value 

        var a = d3.utcFriday.range(start, end); 

        // Getting the friday dates 

        console.log(a); 

    </script> 
</body> 

</html>

Output:

["2015-08-07T00:00:00.000Z", "2015-08-14T00:00:00.000Z", 
"2015-08-21T00:00:00.000Z", "2015-08-28T00:00:00.000Z"]

Example 2:

<!DOCTYPE html> 
<html> 

<head> 

    <title> 

        D3.js | d3.utcFriday Function 

    </title> 

    <script src =  

        "https://d3js.org/d3.v4.min.js"> 

    </script> 
</head> 

<body> 

    <script> 

        // Initialising start and end date 

        var start = new Date(2015, 07, 01); 

        var end = new Date(2015, 07, 30); 

        // Calling the utcFriday function 

        // with step value 

        var a = d3.utcFriday.range(start, end, 2); 

        // Getting the friday dates 

        console.log(a); 

    </script> 
</body> 

</html>

Output:

["2015-08-07T00:00:00.000Z", "2015-08-21T00:00:00.000Z"]

Reference: https://devdocs.io/d3~5/d3-time#timeFriday

Article Tags :

JavaScript

Web Technologies

D3.js