Today #day39 of #100daysofcode, I have completed 6.42 lesson and 6.43 module 6 quiz and a "Monday to Sunday" code practice problems and 6.44 "store manager" code project in JS course. @Sololearn
core objects
1. setInterval
- At specified intervals, the setInterval() method calls a function or evaluates an expression (in milliseconds). It will call the function again and again until clearInterval() is called or the window is closed.
- When passing the function name into the setInterval method, leave out the parentheses. -Write the name of the function without parentheses when passing it into the setInterval method.
Code: click
2. The date object
- We can work with dates thanks to the Date object.
- A date is made up of the following elements: a year, a month, a day, an hour, a minute, a second, and milliseconds.
- Create a new date object with the current date and time by calling new Date().
- syntax:
var d = new Date(); //d stores the current date and time The other methods for initialising dates enable the creation of new date objects based on the specified date and time.
new Date(milliseconds) new Date(dateString) new Date(year, month, day, hours, minutes, seconds, milliseconds)- JavaScript dates are calculated in milliseconds from 01 January, 1970 00:00:00 Universal Time (UTC). One day contains 86,400,000 millisecond.
Example:
```
//Fri Jan 02 1970 00:00:00
var d1 = new Date(86400000);
//Fri Jan 02 2015 10:42:00
var d2 = new Date("January 2, 2015 10:42:00");
//Sat Jun 11 1988 11:42:00
var d3 = new Date(88,5,11,11,42,0,0);
```
- JavaScript counts months from 0 to 11. January is 0, and December is 11. Date objects are static, rather than dynamic. The computer time is ticking, but date objects don't change, once created.
i. Date Methods
- When a Date object is created, a number of methods make it possible to perform operations on it.
- getFullYear() -> gets the year
- getMonth() -> gets the month
- getDate() -> gets the day of the month
- getDay() -> gets the day of the week
- getHours() -> gets the hour
- getMinutes() -> gets the minutes
- getSeconds() -> gets the seconds
- getMilliseconds() -> gets the milliseconds
Example :
Images
6.42 completed
Module 6 completed
Conclusion
- setInterval()
- the date object
- Date Methods
- 3 code practice problems
- Module 6 quiz
- "Monday to Sunday" code practice problems
- "Store manager" code project
My Code:
"Monday to Sunday" code practice problems
"Store manager" code project
