D3.js | d3.utcSundays() Function

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

Syntax:

d3.utcSundays( 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 which holds the value used to skip the dates.

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

Below programs illustrate the d3.utcSundays() function in D3.js:

Example 1:

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<!DOCTYPE html>
<html>
  
<head>
    <title>
        D3.js | d3.utcSundays() 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 utcSundays() function
        // without step value
        var a = d3.utcSundays(start, end);
          
        // Getting the Sunday dates
        console.log(a);
    </script>
</body>
  
</html>    

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Output:

["2015-08-02T00:00:00.000Z", "2015-08-09T00:00:00.000Z", 
"2015-08-16T00:00:00.000Z", "2015-08-23T00:00:00.000Z"]

Example 2:

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<!DOCTYPE html>
<html>
  
<head>
    <title>
        D3.js | d3.utcSundays() 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 utcSundays() function
        // with step value
        var a = d3.utcSundays(start, end, 2);
            
        // Getting the Sunday dates
        console.log(a);
    </script>
</body>
  
</html>    

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Output:

["2015-08-02T00:00:00.000Z", "2015-08-16T00:00:00.000Z"]

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



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