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How can I declare optional function parameters in Javascript? [duplicate]

... With ES6: This is now part of the language: function myFunc(a, b = 0) { // function body } Please keep in mind that ES6 checks the values against undefined and not against truthy-ness (so only real undefined values get the default value - falsy values like null will not default). Wit...
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Accessing JPEG EXIF rotation data in JavaScript on the client side

...possible (It uses DataView and readAsArrayBuffer which are available in IE10+, but you can write your own data reader for older browsers): function getOrientation(file, callback) { var reader = new FileReader(); reader.onload = function(e) { var view = new DataView(e.target...
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How do I clone a range of array elements to a new array?

I have an array X of 10 elements. I would like to create a new array containing all the elements from X that begin at index 3 and ends in index 7. Sure I can easily write a loop that will do it for me but I would like to keep my code as clean as possible. Is there a method in C# that can do it for m...
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Is a colon `:` safe for friendly-URL use?

... | edited May 23 '17 at 10:31 Community♦ 111 silver badge answered Jan 13 '10 at 0:06 ...
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Android - Set max length of logcat messages

...size buffer in logcat for binary logs (/dev/log/events) and this limit is 1024 bytes. For the non-binary logs there is also a limit: #define LOGGER_ENTRY_MAX_LEN (4*1024) #define LOGGER_ENTRY_MAX_PAYLOAD (LOGGER_ENTRY_MAX_LEN - sizeof(struct logger_entry)) So the real message size for bot...
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How to add new elements to an array?

... 408 The size of an array can't be modified. If you want a bigger array you have to instantiate a ne...
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How can I position my div at the bottom of its container?

...Assign position:relative to #container, and then position:absolute; bottom:0; to #copyright. #container { position: relative; } #copyright { position: absolute; bottom: 0; } <div id="container"> <!-- Other elements here --> <div id="copyright"> ...
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TypeScript and field initializers

...oses only. – Jacques Oct 13 '15 at 10:42 15 I agree with Jack and Jaques, and I think its worth r...
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How to use phpexcel to read data and insert into database?

...age()); } // Get worksheet dimensions $sheet = $objPHPExcel->getSheet(0); $highestRow = $sheet->getHighestRow(); $highestColumn = $sheet->getHighestColumn(); // Loop through each row of the worksheet in turn for ($row = 1; $row <= $highestRow; $row++){ // Read a row of data i...
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Dynamically creating keys in a JavaScript associative array

...() var keyValuePair = text.replace(/ /g,'').split('='); dict[ keyValuePair[0] ] = keyValuePair[1]; alert( dict[keyValuePair[0]] ); share | improve this answer | follow ...