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Understanding the Rails Authenticity Token

.... Here's the example from the Rails Guide on Security: <a href="http://www.harmless.com/" onclick=" var f = document.createElement('form'); f.style.display = 'none'; this.parentNode.appendChild(f); f.method = 'POST'; f.action = 'http://www.example.com/account/destroy'; f.submit(); ...
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Local file access with JavaScript

.../write with Firefox back in 2003 web.archive.org/web/20031229011919/http://www.captain.at/… (bulit for XUL but available in the browser with XpCom) and Microsoft had node.js-style javscript shell scripting in the 1990s (and FileIO available in the browser with ActiveX) – orig...
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How do I perform a Perl substitution on a string while keeping the original?

... Another pre-5.14 solution: http://www.perlmonks.org/?node_id=346719 (see japhy's post) As his approach uses map, it also works well for arrays, but requires cascading map to produce a temporary array (otherwise the original would be modified): my @orig = ('...
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How do I send a cross-domain POST request via JavaScript?

...se. Example script: $.ajax({ type: "POST", url: "http://www.yoururl.com/", crossDomain: true, data: 'param1=value1&param2=value2', success: function (data) { // do something with server response data }, error: function (err) ...
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KnockOutJS - Multiple ViewModels in a single View

... single view. Html View <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> </head> <body> <div id="container1"> <ul> <li >Container1 item</li> <!-- ko fo...
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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...

...A3-F393-E0A9-E50E24DCCA9E。标准16位UUID技术文档请参考:https://www.bluetooth.com/specifications/assigned-numbers/。 点此自助购买 以上演示的aia源码。BLE专业文档更多关于BLE更深入的技术原理介绍,请参考BLE技术揭秘。 最后做个推广即日起,...
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How to align a div to the top of its parent but keeping its inline-block behaviour?

...ment you want at the top, as I have demonstrated on your jsfiddle. http://www.brunildo.org/test/inline-block.html share | improve this answer | follow | ...
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How to convert a DOM node list to an array in Javascript?

...t "Host objects are more or less obsolete per ES6 / IDL." I see per http://www.w3.org/TR/WebIDL/#es-array that specs can use this IDL to define "platform array objects" but http://www.w3.org/TR/domcore/ doesn't seem to be using the new IDL for HTMLCollection (though it looks like it might be doing s...
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Comparing date ranges

... period 10/06/1983 to 14/06/1983. You may find the Snodgrass book (http://www.cs.arizona.edu/people/rts/tdbbook.pdf) useful: it pre-dates mysql but the concept of time hasn't changed ;-) share | im...
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Check if option is selected with jQuery, if not select a default

... extensively with select lists on the client check out this plugin: http://www.texotela.co.uk/code/jquery/select/. Take a look the source if you want to see some more examples of working with select lists. share | ...