how can I count the number of clicks in a time interval, for instace: how many clicks the user did in 2 seconds?? I know how to count clicks but I don't know how to measeure time
Thanks
Try using a timeout to clear the function that detects the clicks. With jQuery, try this:
var clicks=0;
function myClickFunction(event){
clicks++;
}
$(function(){
$("#something").bind("click",myClickFunction);
setTimeout(function(){
$("#something").unbind("click",myClickFunction);
alert("You clicked "+clicks+" times.");
},2000);
});
Replace #something with a jQuery selector of an element you want the clicks to be detected on and the alert line with your own code that will be run after the timer has run out.
Ad#m
HTML:
<button>Click me!</button>
<div id="status">Not Running</div>
JS:
var running = false,
count = 0,
run_for = 2000;
var end_counter = function() {
if (running) {
running = false;
$("#status").text("Not Running");
alert(count);
started_at = 0;
}
};
$('button').click(function() {
if (running) {
count++;
} else {
running = true;
$("#status").text("Running");
count = 1;
setTimeout(end_counter, run_for);
}
});
Demo: http://jsfiddle.net/pXMxQ/2/
define a variable
attach click handler to element
set variable = 0
start ur timer (setTimeout)
increment variable on each click
when timeout handler excutes, detach ur handler
- OR -
define a variable for counter
define a variable for doCounting
set counter = 0, doCounting = true
start ur timer (setTimeout)
increment counter on each click if doCounting is true
set doCounting = false when timeout handler executes
Use the setTimeout function
e.g. if Every click increments a variable clickcount you could do the following:
function startCounting(){
clickcount = 0;
setTimeout(function(){alert("you made "+clickcount +" clicks!");}, 2000);
}
Related
What I want:
There are two pictures that are being switched/swapped every three seconds.
I want to make it so that when the button is clicked, the picture switches and the auto-swap resets. So if the button is clicked, the image swaps and three seconds later, it will auto-swap, until the button is clicked again in which the cycle will repeat.
What I have right now
Currently, the problem is that: when the button is clicked, it messes up the timing of the auto-switches.
Edit:
Please don't create a new code base. Just modify mines. The code doesn't have to be an expert super concise level. I'm only three weeks into JavaScript (and it's my first programming language). I have to explain to classmates and it wouldn't be nice the code had elements I don't understand. So sorry for the inconvenience.
Right now I just need the button to correctly stop and restart the time.
<html>
<head>
<script>
let reset = setTimeout(change, 3000);
function change() {
if(document.getElementById("picture").src == "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350") {
document.getElementById("picture").src = "https://images.pexels.com/photos/67636/rose-blue-flower-rose-blooms-67636.jpeg?auto=compress&cs=tinysrgb&h=350";
}
else {
document.getElementById("picture").src = "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350";
}
setTimeout(change, 3000);
}
function fastChange() {
clearTimeout(reset);
if(document.getElementById("picture").src == "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350") {
document.getElementById("picture").src = "https://images.pexels.com/photos/67636/rose-blue-flower-rose-blooms-67636.jpeg?auto=compress&cs=tinysrgb&h=350";
}
else {
document.getElementById("picture").src = "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350";
}
}
</script>
</head>
<body>
<input type="button" onclick="fastChange();">
<img src="https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350" id="picture">
</body>
</html>
The reason why your timer resets is because you are not clearing the timeout.
you need to make a reference to the timeout and then use clearTimeout() on it whne you make the fast change. I don't think it is possible or wise to do that inline the way you have it so you code needs to be refactored
let imgSrc1 = 'https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350'
let imgSrc2 = 'https://images.pexels.com/photos/67636/rose-blue-flower-rose-blooms-67636.jpeg?auto=compress&cs=tinysrgb&h=350'
let imgElement = document.getElementById('picture');
let timeout;
function change() {
if(imgElement.src === imgSrc1) {
imgElement.src = imgSrc2;
} else {
imgElement.src = imgSrc1;
}
if (timeout) {
clearTimeout(timeout);
}
timeout = setTimeout(change, 3000);
}
You don't even need the second function fastChange. Now you can sent the onClick listener to change() like this
document.getElementById('whatever you want to click').onCLick = change;
Setting and clearing timeouts in multiple places will work, but I prefer using a "main loop" and a variable to count frames.
Here's an example that uses setInterval and resets a timer variable when the button was clicked:
const url1 = "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350";
const url2 = "https://images.pexels.com/photos/67636/rose-blue-flower-rose-blooms-67636.jpeg?auto=compress&cs=tinysrgb&h=350";
function change() {
picture.src = picture.src == url1 ? url2 : url1;
}
var timer = 0;
setInterval(function() {
timer++;
time.textContent = timer;
if (timer === 30) fastChange();
}, 100);
function fastChange() {
change();
timer = 0;
}
picture.src = url1;
swap.onclick = fastChange;
#picture {
height: 70vh
}
<button id="swap">SWAP</button> <span id="time"></span><br>
<img id="picture">
You can do this by calling setTimeout and updating the index as necessary. Just be sure to store the most recent timeout id so that it can be cancelled on reset using clearTimeout.
// store the reference to the <img> that contains the picture
const pic = document.getElementById('picture')
// store a list (array) of the two picture urls
const sources = [
'https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350',
'https://images.pexels.com/photos/67636/rose-blue-flower-rose-blooms-67636.jpeg?auto=compress&cs=tinysrgb&h=350'
]
// used to store a reference to the interval timer you created.
var lastTimer
// a starting index of the list (i.e. which image we are up to right now)
var index = 1
// this functions swaps the image and sets a timer
function startRotation() {
// update the index to the next one (goes 0-1-0-1->etc)
index = 1 - index
// sets the .src of the image element
pic.src = sources[index]
// starts a 3 second timer to call this same function again
// but also stores a reference to the timer so that it can be cancelled
lastTimer = setTimeout(startRotation, 3000)
}
// this functions resets the timer and restarts the process
function reset() {
// stop the current timer if there is one
if(lastTimer){
clearTimeout(lastTimer)
}
// restart the process
startRotation()
}
// start the swapping process on start
startRotation()
<input type="button" onclick="reset();">
<img id="picture">
NOT HOW YOU CLEARTIMEOUT:
<html>
<head>
<script>
var i;
function change() {
if(document.getElementById("picture").src == "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350") {
document.getElementById("picture").src = "https://images.pexels.com/photos/67636/rose-blue-flower-rose-blooms-67636.jpeg?auto=compress&cs=tinysrgb&h=350";
}
else {
document.getElementById("picture").src = "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350";
}
i = setTimeout(change, 3000);
}
function fastChange() {
clearTimeout(i);
if(document.getElementById("picture").src == "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350") {
document.getElementById("picture").src = "https://images.pexels.com/photos/67636/rose-blue-flower-rose-blooms-67636.jpeg?auto=compress&cs=tinysrgb&h=350";
}
else {
document.getElementById("picture").src = "https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350";
}
i = setTimeout(change, 3000);
}
</script>
</head>
<body onload="setTimeout(change, 3000)">
<input type="button" onclick="fastChange();">
<img src="https://images.pexels.com/photos/248797/pexels-photo-248797.jpeg?auto=compress&cs=tinysrgb&h=350" id="picture">
</body>
</html>
hello i try to create the function to prevent the other function to run for 10 minutes IF user close the content and refresh the page.
the other function is to show the content when we scroll with 2 argument
first: it will run the function with first argument with no interval, if user click close and refresh. it will run the second argument that give interval
heres my code.
https://jsfiddle.net/8c1ng49a/1/
please look this code
var popUp= document.getElementById("popup");
var closePopUp= document.getElementsByClassName('popup-close');
var halfScreen= document.body.offsetHeight/2;
var showOnce = true;
var delay;
function slideUp(){
popUp.style.maxHeight="400px";
popUp.style.padding="10px 20px";
popUp.style.opacity="1";
if(popUp.className==="closed"){
popUp.className="";
}
}
function slideDown(){
popUp.style.maxHeight="0";
popUp.style.padding="0 20px";
popUp.style.opacity="0";
// add class closed for cache
if(popUp.className===""){
popUp.className="closed";
localStorage.setItem('closed', 'true'); //store state in localStorage
}
}
// start interval
function startDelay() {
delay = setInterval(slideUp, 1000);
}
// clear interval
function clearDelay() {
window.clearTimeout(delay);
}
// check if cache heve class close
window.onload = function() {
var closed = localStorage.getItem('closed');
if(closed === 'true'){
popUp.className="closed";
}
}
// show popup when scroll 50%
window.onscroll = function scroll(ev) {
// first time visited
if ((window.innerHeight+window.scrollY) >= halfScreen && showOnce) {
slideUp();
showOnce = false;
}
//same user mutilple time visited the site
else if((popUp.className==="closed" && window.innerHeight+window.scrollY) >= halfScreen && showOnce ){
startDelay();
showOnce = false;
}
};
// close button when click close
for(var i = 0; i<closePopUp.length; i++){
closePopUp[i].addEventListener('click', function(event) {
slideDown();
});
}
my interval didnt work onthe second argument its fire when i refresh, i dont know why.
but if add startDelay on my first arguments its work. but i need to place the interval on my second argu
When you want to make delay use setTimeout function.
Here is documentation of this function.
setInterval Repeatedly calls a function or executes a code snippet, with a fixed time delay between each call.
It's a follow up to this question - https://stackoverflow.com/a/33430608/3766930
Basically I have a text area and when user starts typing in sth, the counter starts going down from 3 to 0. when it reaches 0 it gets disabled.
Now I want to add a feature of starting over - when user clicks the link start over, text area goes enabled again and user has 3 seconds (again) to perform the input.
I modified the jquery script:
$('#textArea').on('input propertychange', display30Seconds);
var interval;
function display30Seconds() {
var validTime = 3000;
if (!interval)
interval = setInterval(function () {
$('#counter').html(validTime / 1000);
validTime = validTime - 1000;
if (validTime < 0) {
clearInterval(interval);
alert('Time Up!');
$('#textArea').prop('disabled', true);
$('#counter').html('start over');
$('#counterIsDone').on('click', function(){
$('#textArea').prop('disabled', false);
display30Seconds();
});
}
}, 1000);
}
but I see that I cannot call the method display30Seconds(); again. Or rather I can, but the interval is not set again. How can I fix it?
Seems like I'm not entering the code inside
if (!interval)
because the interval is not visible any more after clearing it (?). So I thought about moving the var interval; into the body of the method function display30Seconds() {, but that doesn't bring the expected effect. Is there a way of fixing it?
Here is my updated fiddle: http://jsfiddle.net/jf4ea4nx/3/
Set interval=null after the clearInterval() call.
What seems to confuse you is the semantics of clearInterval(interval). As Patrick Evans points out in his comment, it will not set interval to a value that evaluates to false in a condition.
To make it completely clear you could use a boolean variable such as countdownRunning in addition to the interval variable to keep track of whether the countdown is active or not.
Try this:
$('#textArea').on('input propertychange', display30Seconds);
var interval=false;
function display30Seconds() {
var validTime = 3000;
if (!interval)
interval = setInterval(function () {
$('#counter').html(validTime / 1000);
validTime = validTime - 1000;
if (validTime < 0) {
clearInterval(interval);
alert('Time Up!');
$('#textArea').prop('disabled', true);
$('#counter').html('start over');
$(document).on('click','#counterIsDone', function(){
$('#textArea').prop('disabled', false);
display30Seconds();
});
interval=false;
}
}, 1000);
}
You can improve your code by using a conditional recursive call to to your iterative function instead - each call has a one second delay, which makes it slightly more intuitive to use (think of each call as one tick):
var seconds = 3;
$('#textArea').on('input propertychange', setTimeout(timeout.bind(null, seconds), 1000));
function timeout (iterations) {
$('#counter').html(iterations);
if (iterations === 0) {
alert('Time Up!');
$('#textArea').prop('disabled', true);
$('#counter').html('start over');
$('#counterIsDone').on('click', function(){
$('#textArea').prop('disabled', false);
timeout(seconds);
});
}
else {
setTimeout(timeout.bind(null, --iterations), 1000);
}
}
The bind function simply binds the arguments of the bind function to the arguments of the timeout call - the first argument to the bind function declares its this scope; but don't worry about that too much.
You can modify the duration of the timer by changing the seconds var. Hope this helps :)
this is the code that comes in head section and it will automatically refresh the whole page in 1 min as i put 6000 in the code below
<script type="text/javascript">
setTimeout('window.location.href=window.location.href;', 6000);
</script>
is there any way for example, when there's 10 seconds left to refresh the page then, a button will display and say "Click here to reset timer" and it will reset that timer to 1 min again?
<script language="javascript">
var timeout,interval
var threshold = 15000;
var secondsleft=threshold;
startschedule();
window.onload = function()
{
startschedule();
}
function startChecking()
{
secondsleft-=1000;
if(secondsleft <= 10000)
{
document.getElementById("clickme").style.display="";
document.getElementById("timercounter").innerHTML = Math.abs((secondsleft/1000))+" secs";
}
}
function startschedule()
{
clearInterval(timeout);
clearInterval(interval);
timeout = setTimeout('window.location.href=window.location.href;', threshold);
secondsleft=threshold;
interval = setInterval(function()
{
startChecking();
},1000)
}
function resetTimer()
{
startschedule();
document.getElementById("clickme").style.display="none";
document.getElementById("timercounter").innerHTML="";
}
</script>
Please wait...<span id="timercounter"></span>
<button id="clickme" style="display:none;" onclick="javascript:resetTimer();">Click here to reset timer</button>
Assuming you have the following html for the button:
<button id="cancel-reload-button" style="display: none" onclick="cancelReload()">Cancel Reload</button>
And this as the script (Note: this gives the idea, but is not neccesarily fully tested):
// Variable for holding the reference to the current timeout
var myTimeout;
// Starts the reload, called when the page is loaded.
function startReload() {
myTimeout = setTimeout(function() {
document.getElementByID("cancel-reload-button").style.display = "inline";
myTimeout = setTimeout(function() {
window.location.reload();
} 10000)
}, 50000);
}
// Cancel the reload and start it over. Called when the button is
// clicked.
function cancelReload() {
clearTimeout(myTimeout)
startReload()
}
// On page load call this function top begin.
startReload();
I created two functions, one for starting the reload and the second one for cancelling it.
Then I assigned the timeout to the variable myTimeout which can be used to later cancel the timeout.
Then I called myTimeout twice - Once for 50 secs, at which point it shows the button and once for 10 secs after which it finally reloads.
How about below? If you click on OK to reset timer, it would keep giving the confirm box every 50 seconds. If you click cancel, it will refresh the page in 10 seconds.
setInterval(function(){ var r = confirm("Reset Timer");
if (r == true) {
setTimeout('window.location.href=window.location.href;', 60000);
} else {
setTimeout('window.location.href=window.location.href;', 10000);
}
}, 50000);
Note: In your question you specified 1 minute, but your code works for 6 seconds(6000 -- > 6 seconds not 60 seconds) I have included for a minute
You can use 2 setTimeout calls, one to make the "Reset" button show up and another one for the refresh timer reset. The trick is to store the second setTimeout on a global variable and use clearTimeout to reset it if the button is pressed.
Here is some JavaScript code to illustrate:
<script type="text/javascript">
var autoRefreshTime = 30 * 1000; // 60000ms = 60secs = 1 min
var warningTime = autoRefreshTime - (10 * 1000); // 10 secs before autoRefreshTime
waitTimeout = setTimeout('window.location.href=window.location.href;', autoRefreshTime);
warningTimeout = setTimeout('ShowResetButton();', warningTime);
function ShowResetButton() {
// Code to make the "Reset" button show up
}
// Make this function your button's onClick handler
function ResetAutoRefreshTimer() {
clearTimeout(waitTimeout);
waitTimeout = setTimeout('window.location.href=window.location.href;', autoRefreshTime);
}
</script>
The way I would do it is make a function with a timeout, and invoke that function
<script type="text/javascript">
var refreshFunc = function(){
setTimeout(function(){
var r = confirm("Do you want to reset the timer?");
if(r === false){
window.location.href=window.location.href;
}else{
refreshFunc();
}
}, 6000);
};
refreshFunc();
</script>
One big problem with using confirm in this case is you cannot program it to reject. You would have to implement you own modal/dialog box so you can auto reject in 10 seconds.
Try using setInterval():
var time;
$(function() {
time = $('#time');
$('#reset').on('click', reset);
start();
});
var timer, left;
var start = function() {
left = +(time.text()); //parsing
timer = setInterval(function() {
if (0 <= left) {
time.text(left--);
} else {
clearInterval(timer);
location.replace(location);
}
}, 1000);
};
var reset = function() {
if (timer) {
clearInterval(timer);
}
time.text('59');
start();
};
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<h1><span id='time'>59</span> second(s) left</h1>
<input id='reset' value='Reset' type='button' />
hey, how can I have my download link hidden, and make a count down type thing. Maybe have it count down from 10 and once it's done that have the download link appear, it would be best to do it in js right?
does anyone know how to do this? :D
Thanks
Complete example:
<span id="countdown"></span>
<a id="download_link" href="download.zip" style="display:none;">Download</a>
<noscript>JavaScript needs to be enabled in order to be able to download.</noscript>
<script type="application/javascript">
(function(){
var message = "%d seconds before download link appears";
// seconds before download link becomes visible
var count = 10;
var countdown_element = document.getElementById("countdown");
var download_link = document.getElementById("download_link");
var timer = setInterval(function(){
// if countdown equals 0, the next condition will evaluate to false and the else-construct will be executed
if (count) {
// display text
countdown_element.innerHTML = "You have to wait %d seconds.".replace("%d", count);
// decrease counter
count--;
} else {
// stop timer
clearInterval(timer);
// hide countdown
countdown_element.style.display = "none";
// show download link
download_link.style.display = "";
}
}, 1000);
})();
</script>
You can use setInterval for this. setInterval behaves like a timer, where you can run a certain function periodically. Something like this should do the work(untested):
$(".link").hide();
var iteration = 0;
var timer = setInterval(function() {
if(iteration++ >= 10) {
clearTimeout(timer);
$(".link").show();
$(".counter").hide();
}
$(".counter").text(10 - iteration);
}, 1000);
This will initially hide the download link and run a function every second which counts down from 10. When we reaced ten, we hide the counter and show the link. ClearTimeout is used so that we don't count after we reached ten. Easy as dell.
Edit: As mentioned in the comments, this function is using jQuery to find the elements.
Take a look at the setTimeout function. You can do something like:
function displayLink() {
document.getElementById('link_id').style.display = 'block';
}
setTimeout(displayLink, 10000);
var WAIT_FOR_SECONDS = 10;
var DOWNLOAD_BUTTON_ID = "btnDownload";
if (document.body.addEventListener) {
document.body.addEventListener("load", displayDownloadButton, false);
} else {
document.body.onload = displayDownloadButton;
}
function displayDownloadButton(event) {
setTimeout(function() {
_e(DOWNLOAD_BUTTON_ID).style.display = "";
}, WAIT_FOR_SECONDS*1000);
}
function _e(id) {
return document.getElementById(id);
}