Tag: debounce

Breakpoint JS – load external javascript for different browser breakpoints

·

idea

Live Demo: http://hasinhayder.github.io/BreakPoint/

Breakpoint helps you to define multiple breakpoint ranges and load external javascript files when someone resize their browser window to those breakpoints. Beside loading external scripts, Breakpoint also triggers an event whenever browser width falls in any of those predefined breakpoint ranges.

Using Breakpoint
Using BreakPoint is pretty simple. Include jQuery in your web application and then include jquery.breakpoint.js. Now you can define multiple breakpoint ranges and initialize like this

[sourcecode language=”javascript”]
$(document).ready(function(){
$.BreakPoint({
breakpoints:{
mobile:{max:480,load:true},
default:{min:480,max:1024, load:true},
wide:{min:1024,max:1200,load:true},
superwide:{min:1200,load:true},
}
});
});
[/sourcecode]

In the example above, we have defined four different breakpoints. The first one mobile will be used whenever browser is resized from 0px to 480 pixel (all inclusive). The next breakpoint, default will be used whenever browser is resized between 480px to 1024px (all inclusive), and so on.

Now, whenever a breakpoint is reached, BreakPoint jQuery Plugin will load an external javascript file with the same name of the breakpoint. For example, when browser is resized to 400px it will fall under mobile and now an external file named mobile.js will be loaded and executed.

By default BreakPoint will look for external javascript files in the js/ folder in the current path. But you can change this by passing a parameter named prefix, like this

[sourcecode language=”javascript”]
$(document).ready(function(){
$.BreakPoint({
prefix:"scripts/",
breakpoints:{
mobile:{max:480,load:true},
default:{min:480,max:1024, load:true},
wide:{min:1024,max:1200,load:true},
superwide:{min:1200,load:true},
}
});
});
[/sourcecode]

Now BreakPoint will load external js files from the scripts/ folder.

Breakpoint Parameters
prefix: By default, prefix is set to js/ but you can change it to anything you want.
breakpoints: for each breakpoints, there are three paramaters you can pass which are “min”, “max” and “load”. By default min is set to 0, max is set to 9999 and load is set to false. The load parameter is an important one if you want to load external javascript files whenever a breakpoint is reached. If load is set to true, external files will be loaded, otherwise not.

BreakPoint Events
Whenever a breakpoint is reached, BreakPoint plugin will trigger a window event named breakpoint. The event object will have an attribute named breakpoint which will contain the name of the breakpoint that has been reached. Here is an example how you can add an event listener to this breakpoint event

[sourcecode language=”javascript”]
$(document).ready(function(){
$(window).bind("breakpoint",function(e){
if(console)
console.log(e.breakpoint);
});
});
[/sourcecode]

That’s mainly it. Enjoy! Check out the live demo at http://hasinhayder.github.io/BreakPoint/

LazyMouse jQuery Plugin – detect mouse inactivity easily :)

·

LazyMouse

Before jumping into the details, let me hear you asking “WHY?”. To be honest, not all of you will need to detect the mouse inactivity in your web applications. But sometime, it’s useful to do something different after a certain period of inactivity either to grab attention of the viewer, or to help him by improving the UX. For example, hide the sidebar and top navigation when user is reading the content, to emphasis his reading experience. Or show an animation – just do whatever during your user’s mouse is inactive for some time.

And to detect mouse inactivity easily, here comes the LazyMouse jQuery plugin which attaches two new events to the bodyelement, one is mouse.active and another one is mouse.inactive . You can just add two listeners for those events and do whatever you want to do 🙂

Using jQuery LazyMouse is pretty simple. Initialize it like this
[sourcecode language=”javascript”]
$(document).ready(function(){
$.LazyMouse();
})
[/sourcecode]

You can also specify the inactivity threshold in milliseconds, like this

[sourcecode language=”javascript”]
$(document).ready(function(){
$.LazyMouse({
delay:2000 //2 seconds threshold
});
})
[/sourcecode]

Once initialized, as we have mentioned earlier, the body element will be triggered with two new events. Lets add a listener to those, like this

[sourcecode language=”javascript”]
$(document).ready(function(){
$("body").bind("mouse.active",function(){
console.log("Mouse Active");
});
$("body").bind("mouse.inactive",function(){
console.log("Mouse Inctive");
});
})
[/sourcecode]

The events are propagated using jQuery Debounce, and therefore it is rate limited for good. See the live demo at http://hasinhayder.github.io/LazyMouse, and fork the github repo at http://github.com/hasinhayder/LazyMouse

Enjoy 🙂