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| = XPath helper =
| | #REDIRECT [[:Category:Coding Tips]] |
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| function $x(p, context) {
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| if (!context) context = document;
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| var arr = [];
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| var xpr = document.evaluate(p, context, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
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| for (i=0; item = xpr.snapshotItem(i); i++) arr.push(item);
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| return arr;
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| }
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| Run a particular xpath expression <code>p</code> against the context node <code>context</code> (or the document, if not provided).
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| Return the results as an array.
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| = Serialize/deserialize =
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| Used to store and retrieve multiple values (typically as a serialized hash) in a single [[GM_getValue]] slot.
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| function deserialize(name, def) {
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| return eval(GM_getValue(name, (def ? def : '({})')) );
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| }
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|
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| function serialize(name, val) {
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| GM_setValue(name, uneval(val));
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| }
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| Example usage:
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| var settings = {a: 1, b: 2, c: 3};
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| serialize('test', settings);
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| var _settings = deserialize('test');
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| // now "settings == _settings" should be true
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