The D3.timer() function is used to run a timer function after a particular interval of time. The timer will run after a specified delay. The delay given is in milliseconds.
Syntax:
d3.timer(callback, delay);
Parameters: It takes the following two parameters.
- callback: It is a function.
- delay: It is the delay after which the function is executed.
Returns: It returns the Time of datatype Number.
Below given are a few examples of the above function.
Example 1:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <style> </style> <body> <!-- Fetching from CDN of D3.js --> <script type = "text/javascript" </script> <script> let func=function(elapsed) { console.log(elapsed); if (elapsed > 500){ console.log("Timer stopped") timer.stop(); } } var timer = d3.timer(func); </script> </body> </html> |
Output:
Example 2:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <style> .originalColor{ height: 100px; width: 100px; } .darkerColor{ height: 100px; width: 100px; } </style> <body> <!-- Fetching from CDN of D3.js --> <script type = "text/javascript" </script> <script> let func=function(e) { console.log(e); if (e>300){ console.log("Timer stopped") timer.stop(); } } // Delay of 2000ms var timer = d3.timer(func, 2000); </script> </body> </html> |
Output:
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