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How do you performance test JavaScript code?

...e being timed... var duration = performance.now() - start; References https://developer.mozilla.org/en-US/docs/Web/API/Performance.now() http://www.w3.org/TR/hr-time/#dom-performance-now share | ...
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How to get everything after a certain character?

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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AddRange to a Collection

... Lippert can now be found at web.archive.org/web/20190316010649/https://… – user7610 Mar 21 '19 at 17:28 ...
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Filtering for empty or NULL names in a queryset

...ch as CharField or TextField. Read the documentation for the explanation: https://docs.djangoproject.com/en/dev/ref/models/fields/#null Solution: You can also chain together methods on QuerySets, I think. Try this: Name.objects.exclude(alias__isnull=True).exclude(alias="") That should give you ...
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JavaScript: Create and save file [duplicate]

... This project on github looks promising: https://github.com/eligrey/FileSaver.js FileSaver.js implements the W3C saveAs() FileSaver interface in browsers that do not natively support it. Also have a look at the demo here: http://eligrey.com/demos/FileSaver...
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How do I convert datetime to ISO 8601 in PHP

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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file_put_contents(meta/services.json): failed to open stream: Permission denied

...rage/logs dir by inheriting the permissions from the directory this answer https://unix.stackexchange.com/a/115632 can help you to tackle with that. share | improve this answer | ...
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Android - drawable with rounded corners at the top only

... You may need read this https://developer.android.com/guide/topics/resources/drawable-resource.html#Shape and below there is a Note. Note Every corner must (initially) be provided a corner radius greater than 1, or else no corners are rounded. If ...
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Download data url file

...nload", filename); a.click(); } ); }); } download("https://get.geojs.io/v1/ip/geo.json","geoip.json") download("data:text/html,HelloWorld!", "helloWorld.txt"); share | ...
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Turning off auto indent when pasting text into vim

... Update: Better answer here: https://stackoverflow.com/a/38258720/62202 To turn off autoindent when you paste code, there's a special "paste" mode. Type :set paste Then paste your code. Note that the text in the tooltip now says -- INSERT (paste) ...