This is a JS class i made some time ago that could use javascript to detect viewports, it has never been put through rigorous testing but works.
function ResJS(){
this.min = 0;
this.max = 0;
this.config = config;
this.width = function(){
return jQuery(window).width();
}
this.breakpoint = function(min,max){
this.min = min;
this.max = max;
this.outside = false;
this.inside = false;
this.triggeredOut = false;
this.triggeredIn = false;
this.enter = function(callback){
var context = this;
jQuery(window).on('resize',function(){
if(context.min<context.width()&&context.max>context.width()){
if(!context.triggeredIn){
jQuery(document).ready(function(){callback(context.min,context.max)});
context.inside = true; //browser width has entered breakpoint
context.outside = false; //browser has left another breakpoint
context.triggeredIn = true; //triggered event for breakpoint
context.triggeredOut = false; //be ready to trigger leave event
}
}else{
context.inside = false; //browser width is not within breakpoint
context.outside = true; //brower width is outside of breakpoint
}
});
if(context.min<context.width()&&context.max>context.width()){
jQuery(document).ready(function(){callback(context.min,context.max)});
context.inside = true;
context.outside = false;
context.triggeredIn = true;
context.triggeredOut = false;
}else{
context.inside = false;
context.outside = true;
context.triggeredOut = true;
context.triggeredIn = false;
}
return this;
}
this.leave = function(callback){
var context = this;
jQuery(window).on('resize',function(){
if(context.outside&&!context.triggeredOut){
jQuery(document).ready(function(){callback(context.min,context.max)});
context.triggeredIn = false;
context.triggeredOut = true;
}
});
return this;
}
return this;
}
return this;
}
Basically you use it like this
ResJS()
.breakpoint(0,600)
.enter(function(min,max){
console.log(min,max,'enter');
})
.leave(function(min,max){
console.log(min,max,'leave');
});
Breakpoint has min/max parameters for width, then a chained function for entering it and leaving, with a callback to run some JS code.
I cannot go in detail on how it works, as I made it so long ago but your free to use it if it will help. This can be used to load modules through ajax based on the viewport. I believe joomla's com_ajax can be used with this to make some really cool features.
