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Manual Load Trigger Option #5

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Manual Load Trigger Option #5

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a1759b6
Ability to manual load images
iloveitaly Sep 28, 2011
d54080b
Added example of manual load trigger on readme
iloveitaly Nov 27, 2011
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11 changes: 10 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ How to Use

LazyLoad should be initialized during the DOMReady event. There are no required arguments -- only options.

#JS
# JS With Load Trigger on Scroll
/* LazyLoad instance */
var lazyloader = new LazyLoad({
range: 200,
Expand All @@ -21,6 +21,15 @@ LazyLoad should be initialized during the DOMReady event. There are no required
container: window
});

# JS With Manual Load Trigger
var lazyLoader = new LazyLoad({
container: window,
elements: 'img',
useScrollLoad: false
});

lazyLoader.manualLoad()

#HTML
<img src="http://davidwalsh.name/dw-content/blank.gif" data-src="http://davidwalsh.name/dw-content/mexico-2009/small/102_1152.jpg" />
<!-- or -->
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27 changes: 22 additions & 5 deletions Source/LazyLoad.js
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Expand Up @@ -26,7 +26,8 @@ var LazyLoad = new Class({
container: window,
mode: "vertical",
realSrcAttribute: "data-src",
useFade: true
useFade: true,
useScrollLoad: true
},

/* initialize */
Expand All @@ -39,9 +40,25 @@ var LazyLoad = new Class({
this.container = document.id(this.options.container);
this.elements = document.id(this.container == window ? document.body : this.container).getElements(this.options.elements);

// Set a variable for the "highest" value this has been
this.largestPosition = 0;

if(this.options.useScrollLoad) {
// Set a variable for the "highest" value this has been
this.largestPosition = 0;

this.scrollLoad();
} else {
if(this.options.useFade) {
this.elements.each(function(el) {
el.setStyle('opacity', 0);
});
}
}
},
manualLoad: function() {
this.elements.each(function(img) {
this.loadImage(img);
}, this);
},
scrollLoad: function() {
// Figure out which axis to check out
var axis = (this.options.mode == "vertical" ? "y": "x");

Expand Down Expand Up @@ -101,7 +118,7 @@ var LazyLoad = new Class({
}.bind(this);

// Add scroll listener
this.container.addEvent("scroll", action);
this.container.addEvent("scroll", action);
},
loadImage: function(image) {
// Set load event for fadeIn
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