I have the following code partially working. I am newbie in javascript so please don't blame me if my approach is not the best.
window.url_var = "status.htm";
window.elem = "#e1";
function menu_item(){
$(window.elem).click(function (event)
{
$("#divTestArea1").load(window.url_var);
});
}
$("#e1").click(function (event)
{
event.preventDefault();
window.url_var = "demo2.txt";
window.elem = "#e1";
$("#divTestArea1").load(window.url_var);
auto_refresh = setInterval(menu_item(), 5000);
});
$("#e2").click(function (event)
{
event.preventDefault();
window.url_var = "status.htm";
window.elem = "#e2";
$("#divTestArea1").load(window.url_var);
auto_refresh = setInterval(menu_item(), 5000);
});
$("#e3").click(function (event)
{
event.preventDefault();
window.url_var = "form.htm";
window.elem = "#e3";
clearInterval(auto_refresh);
$("#divTestArea1").load(window.url_var);
});
jQuery(document).ready(function() {
$("#divTestArea1").load(window.url_var);
auto_refresh = setInterval(menu_item(), 5000);
});
Whenever I click elements e1 and e2, the setInterval works as expected and as soon as I click element e3, the element cease to be reloaded.
That's the behavior I want so far. But I also wants to start the setinterval again if e1 or e2 get's again clicked.
the last is what it's not working on the above code.
I will appreciate if you could point me in the right direction.
I have come to this code after seeing some of the answers to my original question (thanks to everyone). To clarify my original idea, I need to update some items on my web page on a regular basics but the content can be change with some menu and also some of the contents like a form should not be updated.
window.url_var = "demo2.txt";
var auto_refresh = null;
function setRefresh() {
var self = this;
this.bar = function() {
if(window.url_var != ""){
$("#divTestArea1").load(window.url_var);
auto_refresh = setTimeout(function() { self.bar(); }, 5000);
}
}
this.bar();
}
$("#e1").click(function (event)
{
event.preventDefault();
window.url_var = "demo2.txt";
setRefresh();
});
$("#e2").click(function (event)
{
event.preventDefault();
window.url_var = "status.htm";
setRefresh();
});
$("#e3").click(function (event)
{
event.preventDefault();
window.url_var = "form.htm";
$("#divTestArea1").load(window.url_var);
window.url_var = "";
});
$(document).ready(function() {
setRefresh();
});
Try using 2 different variables and clearing all if needed. This is: auto_refresh1 and auto_refresh2. Each time you call setinterval, it creates a new timer with a new id. You are overwriting auto_refresh variable and the timer before that will still fire.
Or you can store the setinterval in a hash object and run through and clear them all.
I'm unclear as to what exactly it is that you're trying to do here. Nevertheless, I've rewritten your code a bit to make some improvements (and fix one glaring bug in your code involving the setInterval calls).
var url_var = "status.htm",
elem = "#e1",
$destination = $("#divTestArea1"),
auto_refresh;
function menu_item() {
$(elem).bind("click", function (e) {
$destination.load(url_var);
});
}
function load() {
$destination.load(url_var);
}
function set(url, id) {
url_var = url;
elem = id;
}
function setRefresh() {
return setInterval(menu_item, 5000);
}
function handleClick(e) {
e.preventDefault();
set(e.data.url, e.data.id);
load();
auto_refresh = setRefresh();
}
$("#e1").on("click", {
url: "demo2.txt",
id: "#e1"
}, handleClick);
$("#e2").on("click", {
url: "status.htm",
id: "#e2"
}, handleClick);
$("#e3").on("click", function (e) {
e.preventDefault();
set("form.htm", "#e3");
clearInterval(auto_refresh);
load();
});
$(document).ready(function () {
load();
auto_refresh = setRefresh();
});
I'm guessing that maybe those setInterval calls should actually be setTimeout calls? Why would you want to bind a "click" event handler over and over again?
EDIT #1: Switched to jQuery's currently preferred on method from the bind method, included use of event data parameter to further abstract event handling code.
Related
This script has been added dynamically. It has a timeout function, means that it runs every 5 seconds.
dynamicjs.php
$(document).ready(function(){
(function( $ ){
$.fn.baslatmesajlari = function() {
setInterval(function(){
console.log("I am running");
}, 5000);
return this;
};
})( jQuery );
});
$("body").baslatmesajlari();
I load this function to a div using;
$("#temporarycontent").load("dynamicjs.php");
And when I do
$("#temporarycontent").empty();
The script is still running. How can I stop it run ?
You can't, you need a handle to the intervalId returned by the setInterval function or provide an API on the plugin in order to destroy it and cleanup after itself. The easiest way would be to attach the state of the plugin to the DOM element on which it was applied.
(function ($) {
const PLUGIN_NAME = 'baslatmesajlari';
function Plugin($el) {
this.$el = $el;
this._timerId = setInterval(function () {
console.log('running');
}, 2000);
}
Plugin.prototype.destroy = function () {
this.$el.removeData(PLUGIN_NAME);
clearInterval(this._timerId);
};
$.fn[PLUGIN_NAME] = function () {
if (!this.data(PLUGIN_NAME)) this.data(PLUGIN_NAME, new Plugin(this));
return this;
};
})(jQuery);
$(function () {
var plugin = $('#plugin').baslatmesajlari().data('baslatmesajlari');
$('#destroy').click(function () {
plugin.destroy();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="plugin"></div>
<button id="destroy">Destroy plugin</button>
You must have a reference to the interval id, then, when you want to stop it's execution, call clearInterval(the_id)
let interval = null //this is the variable which will hold the setInterval id
$(document).ready(function () {
(function ($) {
$.fn.baslatmesajlari = function() {
interval = setInterval(function () {
console.log('I am running')
}, 5000)
return this
}
})(jQuery)
})
$("body").baslatmesajlari()
And then:
$("#temporarycontent").empty();
clearInterval(interval) // it should stop the function.
Hope it helps.
I have a code that determines if current browser window or tab is active. If it's active, the title of the tab says "active" and if not it says "blurred"
It is working fine. Here's the code:
$(window).on("blur focus", function (e) {
var prevType = $(this).data("prevType");
if (prevType != e.type) { // reduce double fire issues
if (e.type == "blur") {
document.title = 'blurred';
} else if (e.type = "focus") {
document.title = 'focus';
}
}
$(this).data("prevType", e.type);
})
The code above is working fine.
Now if I add AJAX to it, it doesn't work.
$(window).on("blur focus", function (e) {
var prevType = $(this).data("prevType");
if (prevType != e.type) { // reduce double fire issues
if (e.type == "blur") {
document.title = 'blurred';
} else if (e.type = "focus") {
var interval = function () {
$.ajax({
url: "<?php echo base_url('home/get') ?>",
cache: false,
success: function (html) {
$("#text").val(html);
document.title ='focus';
},
});
};
setInterval(interval, <?php echo $int ?>);
}
}
$(this).data("prevType", e.type);
})
It says focused if it's in focus. If I go out of focus, it says "blurred" for less than a second, then says focus again. I don't know why. I want it to say blurred if it's not in focus. Adding the AJAX code doesn't make it work.
Please help. Thanks.
You need to use clearTimeout() in your blur event. My code continuously polls my server for data, but when I go out of the page, it stops polling. Please look at the implementation below. I have done the similar one in my application here:
$(window).blur(function() {
clearTimeout(getJsonTmr);
clearTimeout(updatePreviewTmr);
}).focus(StartTimers);
function StartTimers () {
// Every half a second,
getJsonTmr = setInterval(function () {
$.get("/doodles/update?getJson&DoodleID=" + DoodleOptions.DoodleID, function (data) {
data = JSON.parse(data);
if (!DoodleOptions.isActive)
clearDoodleCanvas();
$.each(data, function (index) {
drawFromStream(data[index]);
});
});
}, 500);
updatePreviewTmr = setInterval(function () {
$.post("/doodles/update?updatePreview", {
"DoodleID": DoodleOptions.DoodleID,
"DoodlePreview": canvas.toDataURL()
});
}, 5000);
}
StartTimers();
You can use the above code as reference and change yours.
A simple reference implementation for you...
function timers() {
tmrAjax = setInterval(function () {
$.get(/* ... */);
}, 1000);
}
timers();
$(window).blur(function () {
clearInterval(tmrAjax);
}).focus(timers);
i have writen script which loads content from external php file. i'm using jquery1-9-1. my script works normal, except that moment when i'm clicking on button second time. there is delay for 0.5s before the animation starts. i think i know what is the problem and where is it. $("#header").animate({marginTop: "10px"... must execute just on the first click. after this clicked once, it must be deactivated. who knows how to solve it? don judge me so harsh and sorry my english
$(document).ready(function () {
var content = $("#content");
$("#main_menu a").click(function () {
var id = this.id;
$("#header").animate({
marginTop: "10px"
}, 500, function () {
$("#content").fadeOut(500, function () {
$("#content").load(id + ".php")
$("#content").fadeIn(500)
})
})
})
})
I have to ask, what is the point of caching content = $("#content") if you then refuse to use it and just call $("#content") repeatedly later?
Anyway, you need a variable to tell if it's the first run or not:
$(function () {
var content = $("#content"), isfirst = true;
$("#main_menu a").click(function () {
var id = this.id,
reveal = function() {
content.fadeOut(500, function () {
content.load(id + ".php")
content.fadeIn(500)
});
};
if( isfirst) $("#header").animate({marginTop: "10px"}, 500, reveal);
else reveal();
isfirst = false;
});
});
You need to track whether or not it has loaded, in that case. A simple variable and some closure should do it:
var isLoaded = false;
$("#main_menu a").click(function () {
var id = this.id;
if (!isLoaded) {
$("#header").animate({
marginTop: "10px"
}, 500);
isLoaded = true;
}
$("#content").fadeOut(500, function () {
$("#content").load(id + ".php")
$("#content").fadeIn(500)
})
});
I have a piece of code that hides an element on mouseout.
The code looks like this:
var myMouseOutFunction = function (event) {
setTimeout(function () {
$(".classToHide").hide();
$(".classToShow").show();
}, 200);
};
This produces a result very close to what I want to do. However, I want to wait the time on the timeout (in this case 200 ms) then check to see if my mouse is still "out" of the element. If it is, I want to do .hide() and .show() on the desired elements.
I want to do this because if a user slightly mouses out then quickly mouses back in, I don't want the elements to flicker (meaning: hide then show real quick) when the user just wants to see the element.
Assign the timeout's return value to a variable, then use clearTimeout in the onmouseover event.
Detailing Kolink answer
DEMO: http://jsfiddle.net/EpMQ2/1/
var timer = null;
element.onmouseout = function () {
timer = setTimeout(function () {
$(".classToHide").hide();
$(".classToShow").show();
}, 200);
}
element.onmouseover = function () {
clearTimeout(timer);
}
You should use mouseenter and mouseleave of jquery. mouseenter and mouseleave will get called only once.and use a flag if to check if mouseenter again called.
var isMouseEnter ;
var mouseLeaveFunction = function (event) {
isMouseEnter = false;
setTimeout(function () {
if(isMouseEnter ){ return;}
$(".classToHide").hide();
$(".classToShow").show();
}, 200);
};
var mouseEnterFunction = function(){
isMouseEnter = true;
}
Use a boolean flag:
var mustWait = true;
var myMouseOutFunction = function (event) {
setTimeout(function () {
if(mustWait){
mustWait = false;
}
else{
$(".classToHide").hide();
$(".classToShow").show();
mustWait = true;
}
}, 200);
};
I have a query plugin I'm working on and I certain functions after ajax content has loaded. The problem is that let's say I re-initiate it 15 times, a click event will then fire 15 times when it's only clicked once.
Is there a way so it doesn't keep piling up? I'm calling addToCart onload and also from itemDetail after the ajax return
thanks!
function addToCart()
{
$(options.add_to_cart).click(function ()
{
event.preventDefault();
var id = $(this).attr('id');
store_item_id_val = id.replace('store-item-id-', '');
var quantity = $('.quantity-' + store_item_id_val);
if (quantity.val() < 1)
{
showError('Please enter a quantity of 1 or more.');
$(quantity).val(1);
return this;
}
$.post($(this).attr('href'),
{ store_item_id: store_item_id_val, quantity: quantity.val() },
function (data)
{
var result = jQuery.parseJSON(data);
renderCart(result);
});
});
return this;
}
function itemDetails()
{
$('.item-details').click(function ()
{
event.preventDefault();
var url = $(this).attr('href');
$.getJSON(url, function (result)
{
$('.modal-title').empty().html(result.title);
$('.modal-content').empty().html(result.html);
$('#modal').slideDown(100);
$('.ui-button').button();
addToCart();
$('.modal-close').click(function ()
{
event.preventDefault();
$('#modal').hide();
});
});
});
Based on the code you provided, I would probably say that you have some other code calling itemDetails(). Each time itemDetails() is called, it ADDS another event handler for click to your .item-details. You may want to instead do:
$(document).ready(function()
{
$('.item-details').click(function ()
{
event.preventDefault();
var url = $(this).attr('href');
$.getJSON(url, function (result)
{
$('.modal-title').empty().html(result.title);
$('.modal-content').empty().html(result.html);
$('#modal').slideDown(100);
$('.ui-button').button();
addToCart();
$('.modal-close').click(function ()
{
event.preventDefault();
$('#modal').hide();
});
});
});
});
This would put the event handler on your .item-details classed items, and only fire the events once. If you have dynamic .item-details added and removed you probably should use:
$('.item-details').live('click', function() ...