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Can we append to a {% block %} rather than overwrite?

In my core.html I have a block labeled javascript. It would be great if I can append more lines to this block without overwriting everything in it. ...
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How to count certain elements in array?

...reduce and forEach and every etc. (I only occasionally write for-loops in javascript, because of block-level scoping is missing, so you have to use a function as the body of the loop anyway if you need to capture or clone your iteration index or value. For-loops are more efficient generally, but so...
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How do you access the matched groups in a JavaScript regular expression?

I want to match a portion of a string using a regular expression and then access that parenthesized substring: 22 Answers...
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In JavaScript, is returning out of a switch statement considered a better practice than using break?

...w-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f6114210%2fin-javascript-is-returning-out-of-a-switch-statement-considered-a-better-practi%23new-answer', 'question_page'); } ); Post as a guest ...
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How can I check for “undefined” in JavaScript? [duplicate]

What is the most appropriate way to test if a variable is undefined in JavaScript? 16 Answers ...
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How do I detect IE 8 with jQuery?

...n also use HTML to detect IE8. <!--[if IE 8]> <script type="text/javascript"> ie = 8; </script> <![endif]--> Having that before all your scripts will let you just check the "ie" variable or whatever. ...
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How can javascript upload a blob?

... You actually don't have to use FormData to send a Blob to the server from JavaScript (and a File is also a Blob). jQuery example: var file = $('#fileInput').get(0).files.item(0); // instance of File $.ajax({ type: 'POST', url: 'upload.php', data: file, contentType: 'application/my-binary...
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Create table with jQuery - append

...was that you were appending the tr to the div here_table. Edit: Here is a JavaScript version if performance is a concern. Using document fragment will not cause a reflow for every iteration of the loop var doc = document; var fragment = doc.createDocumentFragment(); for (i = 0; i < 3; i++) { ...
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Convert string with commas to array

How can I convert a string to a JavaScript array? 18 Answers 18 ...
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How do I prevent site scraping? [closed]

... eg. Selenium or PhantomJS, which open your website in a real browser, run JavaScript, AJAX, and so on, and then get the desired text from the webpage, usually by: Getting the HTML from the browser after your page has been loaded and JavaScript has run, and then using a HTML parser to extract the ...