luci-base: luci.js: add L.dom.isEmpty() helper
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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@ -1188,6 +1188,14 @@
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return null;
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return inst[method].apply(inst, inst.varargs(arguments, 2));
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},
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isEmpty: function(node) {
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for (var child = node.firstElementChild; child != null; child = child.nextElementSibling)
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if (!child.classList.contains('hidden'))
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return false;
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return true;
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}
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}),
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