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Lazy loading script-tags #117

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Lazy loading script-tags #117

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ce90916
Update blazy.js
Nov 9, 2016
361a622
Lazy loading Script-tags
Nov 9, 2016
b667397
Update blazy.js
Nov 9, 2016
1f5e55b
Load script with div, p or article
Dec 13, 2016
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54 changes: 51 additions & 3 deletions blazy.js
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Original file line number Diff line number Diff line change
Expand Up @@ -150,7 +150,23 @@
var util = self._util;
for (var i = 0; i < util.count; i++) {
var element = util.elements[i];
if (elementInView(element, self.options) || hasClass(element, self.options.successClass)) {
var element_ = undefined;

if($(element)[0].tagName == 'SCRIPT') {
element_ = element;
element = $(element).parents('div')[0];

if($(element_).attr('data-parent')) {
element = $('#' + $(element_).attr('data-parent'))[0];
}
}

if (elementInView(element_ || element, self.options) || hasClass(element, self.options.successClass) || (element_ != undefined && elementInView(element_ || element, self.options) && $(element_)[0].tagName == 'SCRIPT')) {

if(element_ !== undefined && $(element_)[0].tagName == 'SCRIPT') {
element = element_;
}

self.load(element);
util.elements.splice(i, 1);
util.count--;
Expand All @@ -165,6 +181,14 @@
function elementInView(ele, options) {
var rect = ele.getBoundingClientRect();

if(ele.tagName == 'SCRIPT') {
rect = $(ele).parents('div, p, article').not(':hidden')[0].getBoundingClientRect();

if($(ele).attr('data-parent')) {
rect = $('#' + $(ele).attr('data-parent'))[0].getBoundingClientRect();
}
}

if(options.container && _supportClosest){
// Is element inside a container?
var elementContainer = ele.closest(options.containerClass);
Expand Down Expand Up @@ -202,7 +226,22 @@

function loadElement(ele, force, options) {
// if element is visible, not loaded or forced
var ele_;

if($(ele)[0].tagName == 'SCRIPT') {
ele_ = ele;
ele = $(ele).parent()[0];

if($(ele_).attr('data-parent')) {
ele = $('#' + $(ele_).attr('data-parent'))[0];
}
}

if (!hasClass(ele, options.successClass) && (force || options.loadInvisible || (ele.offsetWidth > 0 && ele.offsetHeight > 0))) {
if(ele_ !== undefined && $(ele_)[0].tagName == 'SCRIPT') {
ele = ele_;
}

var dataSrc = getAttr(ele, _source) || getAttr(ele, options.src); // fallback to default 'data-src'
if (dataSrc) {
var dataSrcSplitted = dataSrc.split(options.separator);
Expand Down Expand Up @@ -250,8 +289,17 @@
handleSources(img, src, srcset); // Preload

} else { // An item with src like iframe, unity games, simpel video etc
ele.src = src;
itemLoaded(ele, options);
//ele.src = src;
//itemLoaded(ele, options);

if($(ele)[0].tagName == 'SCRIPT') {
$.getScript($(ele_).attr('data-src'));
itemLoaded(ele, options);
$(ele_).remove();
} else {
ele.src = src;
itemLoaded(ele, options);
}
}
} else {
// video with child source
Expand Down