this is my jquery code.this code contain three functions.this three function repeatedly execute for looping.but this code not run properly.how to make recursive call with three functions.the pid1,pid2,pid3 is paragraph tag id's.this code used to make text animation.
$(document).ready(function(){
function animate()
{
$('#pid1').fadeOut(3000, function()
{
$(this).text('string1').fadeIn(3000);
});
animate1();
}
function animate1()
{
$('#pid2').fadeOut(3000, function()
{
$(this).text('string2').fadeIn(3000);
});
animate2();
}
function animate2()
{
$('#pid3').fadeOut(3000, function()
{
$(this).text('string3').fadeIn(3000);
});
animate();
}
});
try like this :
$(document).ready(function(){
function animate() {
$.when($('#pid1').fadeOut(3000, function() {
$(this).text('string1').fadeIn(3000);
})).then(function() {
animate1();
});
}
function animate1() {
$.when($('#pid2').fadeOut(3000, function() {
$(this).text('string2').fadeIn(3000);
})).then(function() {
animate2();
});
}
function animate2() {
$.when($('#pid3').fadeOut(3000, function() {
$(this).text('string3').fadeIn(3000);
})).then(function() {
animate();
});
}
animate();
});
Here a jsFiddle : http://jsfiddle.net/Pascalz/CNRSd/
You must call the function again after making sure that element has fadeout. You should use fadeout callback functions
change you function like this:
function animate()
{
$('#pid1').fadeOut(3000, function()
{
$(this).text('string1').fadeIn(3000, function(){animate(); });
});
}
Here is the link of jsbin by using callback functions
animate by using callback
Related
Sorry for the basic level of the question, but js definitely isn't my area of expertise. However, it's one of those questions that's difficult to Google an answer on.
I basically want to do a couple of things when the window is resized. I have a little bit of extra code that also stops the resize event firing twice.
The issue is that I'm duplicating bits of code, that as a coder, I know is wrong. The problem is I don't know how to go about making it right. Here's my current duplicated code:
Event binding
$(window).on("resize", resizeText);
$(window).on("resize", resizeIndicator);
Functions
function resizeIndicator() {
clearTimeout(id);
id = setTimeout(updateIndicator, 200);
}
function resizeText() {
clearTimeout(id);
id = setTimeout(updateText, 200);
}
Thse are not duplicated but included for completeness:
function updateIndicator() {
$tab = $(".tabs li.focus");
if ($tab.length) {
toggleIndicator($tab, true);
}
}
function updateText() {
$tabs = $(".tabs li:not(.indicator) a");
$tabs.each(function () {
$(this).toggleClass("two-line", this.scrollWidth > $(this).outerWidth());
});
}
So you want to avoid code duplication? No problem use higher order of function to create new function.
function createResizeCallback(resizeFunc) {
var id;
return function () {
clearTimeout(id);
id = setTimeout(resizeFunc, 200);
}
}
$(window).on("resize", createResizeCallback(updateText));
$(window).on("resize", createResizeCallback(updateIndicator));
function updateIndicator() {
console.log('updateIndicator');
}
function updateText() {
console.log('updateText');
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Declare your timeout id globally and use single handler.
Working demo: http://jsbin.com/nugutujoli/1/edit?js,console,output
$(window).on("resize", resizeEvent);
var timeout;
function resizeEvent() {
clearTimeout(timeout);
timeout = setTimeout(function(){
updateIndicator();
updateText();
}, 200);
}
function updateIndicator() {
console.log("update indicator fired.");
}
function updateText() {
console.log("update text fired.");
}
I want this loop forever
$(document).ready(function() {
function news_hot() {
$("div p").each(function(i) {
$(this).delay(1000 * i).queue(function() {
$(this).addClass('hot_li ');
$(this).prev().removeClass('hot_li');
});
});
}
news_hot();
});
<div>
<p>dfsdfsd</p>
<p>dfsdfsd</p>
<p>dfsdfsd</p>
</div>
You can use setInterval() JavaScript function with specified time in milliseconds. The called function will run forever after interval time unless you stop it.
$(document).ready(function () {
function news_hot() {
$("div p").each(function (i) {
$(this).delay(1000 * i).queue(function () {
$(this).addClass('hot_li ');
$(this).prev().removeClass('hot_li');
});
});
}
setInterval(news_hot(),5000);
});
UPDATED CODE WORKING FIDDLE
function news_hot() {
$("div p").each(function (i) {
$(this).delay(1000 * i).queue(function () {
$("div p").removeClass("hot_li");
$(this).addClass('hot_li');
//$(this).prev().removeClass('hot_li');
$(this).dequeue();
});
});
}
setInterval(function(){news_hot()},5000);
.dequeue() function has been added to the code
Here I tried to run some code after height animation
<button id="btn1">Animate height</button>
<div id="box"style="background:#98bf21;height:100px;width:100px;margin:6px;"></div>
$(document).ready(function () {
$("#btn1").click(function () {
$("#box").animate({height:"300px"});
});
var x = $('#box').height();
if(x == 300){alert('animation is finished');}
});
I can't place the code which I want to run after height animation into animate method callback cause the animating box script is placed in one document and code which I want to run in other.
use jquery .promise().done
$(document).ready(function () {
$("#btn1").click(function () {
$("#box").animate({
height: "300px"
}).promise().done(function () {
alert('animation is finished');
});;
})
});
or separately like this:
$(document).ready(function () {
$("#btn1").click(function () {
$("#box").animate({
height: "300px"
});
$("#box").promise().done(function () {
alert('animation is finished');
});
})
});
Fixed Fiddle
Event-driven JavaScript a la jQuery:
//file 1
$("#box").animate({height:"300px"},function() {
$(this).trigger('myBoxFinishedAnimatingHeight');
});
//file 2
$('#box').on('myBoxFinishedAnimatingHeight',function() {
//your code
});
You can simply use the complete property as a callback function:
.animate( properties [, duration ] [, easing ] [, complete ] )
From http://api.jquery.com/animate
Here's a demo
$("#adjest").animate({"height":"300px"},1000);
$("#adjest").promise().done(
function() {
alert("done");
}
);
i would use promise and done, if you can't run it inside animate().
see here
http://jsfiddle.net/5p8Ww/
You could name space your file and call the fucntion...
var NameSpace = Namespace || {};
NameSpace.yourFunction() {
//Do stuff...
}
Then in your html/other_file
.animate( properties , 1000, ease, NameSpace.yourFunction())
I have a very simple function where after click body class fades out and replacing class.
$(".a").click(function () {
('body').fadeOut();
$('body').removeClass();
$('body').addClass("green");
$('body').fadeIn();
});
$(".b").click(function () {
$('body').fadeOut();
$('body').removeClass()
$('body').addClass("pink"),
$('body').fadeIn();
});
The problem I have is that the class is changing before the body will fade out which is opposite to what I am trying to achieve.
Any help much appreciated.
Thanks
Dom
The fadeOut method takes a callback to run after the fade finishes.
You can change the class in that callback:
$(".a").click(function () {
$('body').fadeOut(function() {
$('body').removeClass().addClass("green").fadeIn();
});
});
Use callback functions.
$(".a").click(function () {
('body').fadeOut(function(){
$('body').removeClass();
$('body').addClass("green");
$('body').fadeIn();
});
});
$(".b").click(function () {
$('body').fadeOut(function(){
$('body').removeClass()
$('body').addClass("pink"),
$('body').fadeIn();
});
});
$('body').fadeOut(function(){
$(this).removeClass().addClass("green").fadeIn();
});
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.js"></script>
<script type="text/javascript">
function bigtosmalltriangle() {
$(this).siblings("div.break").removeClass('triangle3').addClass('triangle1');
setTimeout ( "smalltomediumtriangle()", 400 );
}
function smalltomediumtriangle() {
$(this).siblings("div.break").removeClass('triangle1').addClass('triangle2');
setTimeout ( "mediumtobigtriangle()", 400 );
}
function mediumtobigtriangle() {
$(this).siblings("div.break").removeClass('triangle2').addClass('triangle3');
setTimeout ( "bigtosmalltriangle()", 400 );
}
$(function() {
$("span#clickhere").click(
function() {
/* do a lot stuff here */ bigtosmalltriangle();
$(this).hide();
}
);
});
</script>
<style type="text/css">
.triangle1 {background:#000;}
.triangle2 {background:red;}
.triangle3 {background:white;}
</style>
<div><div class="break">Hello World</div><span id="clickhere">asdf</span></div>
I'm trying to get get the div.break to scroll through 3 bgcolors, but when I click on the span it has no effect. Does anyone know what I should do?
Thanks.
You want to call your functions with a specific "this". I asked a similar question: Call function with "this".
$(function() {
$("span#clickhere").click(
function() {
/* do a lot stuff here */
bigtosmalltriangle.call(this);
$(this).hide();
}
);
});
I think because of closures (see Matthew Crumley's answer) the callback functions themselves don't need to be modified, because setTimeout keeps the "scope." I don't know Javascript enough to remotely guarantee that, though. If I am wrong, simply perform the .call(this) trick for the callback functions as well.
The problem is that "this" is not bound to the span you clicked on in the bigtosmalltriangle, smalltomediumtriangle, and mediumtobigtriangle functions. You need to either pass in the element as a parameter, or set a variable that's in scope in all the functions through closures.
Parameter passing:
function bigtosmalltriangle(elements) {
elements.removeClass('triangle3').addClass('triangle1');
setTimeout(function() { smalltomediumtriangle(elements); }, 400);
}
function smalltomediumtriangle(elements) {
elements.removeClass('triangle1').addClass('triangle2');
setTimeout(function() { mediumtobigtriangle(elements); }, 400);
}
function mediumtobigtriangle(elements) {
elements.removeClass('triangle2').addClass('triangle3');
setTimeout(function() { bigtosmalltriangle(elements); }, 400);
}
$(function() {
$("span#clickhere").click(
function() {
/* do a lot stuff here */
bigtosmalltriangle($(this).siblings("div.break"));
$(this).hide();
}
);
});
Closures:
$(function() {
$("span#clickhere").click(
function() {
var elements = $(this).siblings("div.break");
function bigtosmalltriangle() {
elements.removeClass('triangle3').addClass('triangle1');
setTimeout(smalltomediumtriangle, 400);
}
function smalltomediumtriangle() {
elements.removeClass('triangle1').addClass('triangle2');
setTimeout(mediumtobigtriangle, 400);
}
function mediumtobigtriangle() {
elements.removeClass('triangle2').addClass('triangle3');
setTimeout(bigtosmalltriangle, 400);
}
/* do a lot stuff here */
bigtosmalltriangle();
$(this).hide();
}
);
});