10 Questions
What is the purpose of the store_answer function?
To send the answer to the server
What happens when the timer_button is clicked and the timer_id is 0?
The timer starts
What is the purpose of the timer_offset variable?
To adjust the timer start time
What happens when the timer_stop_time is not null and the timer_start_time is not null?
The timer duration is calculated
What is the purpose of the blink_right_answer function?
To highlight the correct answer
What is the purpose of the timer_loop function?
To update the timer display
What happens when the selected_answer is not null and the timer_id is 0?
The answer is sent to the server
What is the purpose of the clearInterval function?
To stop the timer
What is the purpose of the timer_id variable?
To keep track of the timer state
What is the purpose of the timer_start_time variable?
To store the timer start time
Study Notes
Timer Functions
- The
store_answer
function is triggered when an answer is submitted, and it calculates the timer duration by subtracting the start time from the stop time. - The function sends an AJAX request to the
/forum/timer.php
URL with the timer duration, answer, and a random value.
Timer Initialization
- The
timer_click
function is triggered when the timer button is clicked. - If the timer is not running, it sets the timer start time, updates the timer button and message, and starts the timer loop.
- The timer loop is set to run every 200 milliseconds.
Timer Loop
- The
timer_loop
function updates the timer display with the elapsed time. - The elapsed time is calculated by subtracting the start time from the current time.
- The timer display is updated in the format "mm:ss".
Timer Stop and Pause
- When the timer button is clicked again, the timer stops, and the stop time is recorded.
- The timer offset is calculated by subtracting the start time from the stop time.
Statistic Wrap
- The
statisticWrap
elements are updated with the corresponding answer options (a, b, c, d, e) and values. - The answer options are displayed in uppercase.
Blink Right Answer
- The
blink_right_answer
function toggles the visibility of the element with the ID "timer_answer_official answer and stats are available only to registered users. register.".
Timer Variables
-
timer_id
is used to store the timer interval ID. -
timer_start_time
andtimer_stop_time
are used to store the start and stop times of the timer. -
timer_offset
is used to store the timer offset. -
selected_answer
is used to store the selected answer.
This quiz is about understanding the functions and initialization of a timer, including how it calculates duration and sends AJAX requests. It covers the store_answer and timer_click functions and their roles in timer functionality.
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