js: Add 'var'.
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@ -54,7 +54,8 @@ function isElementInViewport(node) {
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if (boundingRect.width <= 1 || boundingRect.height <= 1) {
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var children = node.children;
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var visibleChildNode = false;
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for (i = 0, l = children.length; i < l; ++i) {
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var l = children.length;
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for (i = 0; i < l; ++i) {
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boundingRect = (children[i].getClientRects()[0] ||
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children[i].getBoundingClientRect());
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if (boundingRect.width > 1 && boundingRect.height > 1) {
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@ -85,6 +86,7 @@ function isElementInViewport(node) {
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var walker = document.createTreeWalker(document.body, 4, null);
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var node;
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var textNodes = [];
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var el;
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while (node = walker.nextNode()) {
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if (node.nodeType === 3 && node.data.trim() !== '') {
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textNodes.push(node);
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