Introduction to Apache - Tomcat

Introduction to Apache - Tomcat server

setInterval()

The JavaScript setInterval function can be used to automate a task using a regular time based trigger. Just to be clear, setInterval() is a native JavaScript function.

Basic setInterval() Example

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setInterval(function() {       // Do something every 5 seconds }, 5000);

Tips: If your changing images dynamically load variables from a PHP script you will need to add some sort of random number to the script so that it forces a refresh in all browsers. You can do this by using the following code to generate a random number.

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$(document).ready(function() {     var refreshId = setInterval( function()     {         var r = (-0.5)+(Math.random()*(1000.99));         $('#img-container').load('images/gallery/best/random.php?'+r);     }, 5000); });

Tips: You might also have to use the ajax method instead of load, to prevent the AJAX request to be cached.
Tips: Alternatively, you could stick header(“Cache-Control: no-cache, must-revalidate”); towards the top of your random.php file to prevent the browser from caching.

setTimeout()

The JavaScript setTimeout function can be used in a jQuery script to automate a task using a single-use, time-based trigger.

Basic setTimeout() Example

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setTimeout(function() {       // Do something after 5 seconds }, 5000);

Tip: you can use the ClearTimeout() function to clear any timer values previously stored.

1 2	timeout = setTimeout('timeout_trigger()', 3000); clearTimeout(timeout);

More setTimeout() Examples

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jQuery(document).ready(function () {     //hide a div after 3 seconds     setTimeout( "jQuery('#div').hide();",3000 ); });

Or in a different way:

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jQuery(document).ready(function () {     //hide a div after 3 seconds     setTimeout(function(){ jQuery("#div").hide(); }, 3000); });