21 lines
662 B
JavaScript
21 lines
662 B
JavaScript
function ciy_lazyimg(init) {
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if (init) {
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window.onscroll = function () {
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ciy_lazyimg();
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};
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} else {
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if (+new Date() - window._lazyimg < 500)
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return;
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window._lazyimg = +new Date();
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}
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var arr = document.images;
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for (var i = 0, len = arr.length; i < len; i++) {
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var rect = arr[i].getBoundingClientRect();
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if (rect.left == 0 && rect.right == 0)
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continue;
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if (rect.top + 400 > rect.height && rect.top - rect.height - 100 < document.documentElement.clientHeight && !arr[i].src) {
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arr[i].src = arr[i].getAttribute("data-src");
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}
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}
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}
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