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git undo all uncommitted or unsaved changes
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1704
This will unstage all files you might have staged with git add:
git reset
This will revert a...
How to reset radiobuttons in jQuery so that none is checked
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270
In versions of jQuery before 1.6 use:
$('input[name="correctAnswer"]').attr('checked', false);
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Modifying a query string without reloading the page
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answered Oct 9 '13 at 18:05
Fabio NolascoFabio Nolasco
5,14255 gold badges2828 silver badges3131 bronze badges
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How do you delete an ActiveRecord object?
...like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :before_destroy and :after_destroy callbacks or any dependent association options.
User.delete_all(condition: ...
How to parse Excel (XLS) file in Javascript/HTML5
...he function.
<script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.8.0/jszip.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.8.0/xlsx.js"></script>
<script>
var ExcelToJSON = function() {
this.parseExcel = function(file) {
var read...
JavaScript replace/regex
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edited Jul 22 '09 at 2:43
answered Jul 22 '09 at 1:02
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Boolean operators && and ||
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350
The shorter ones are vectorized, meaning they can return a vector, like this:
((-2:2) >= 0) ...
How to disable Google Chrome auto update?
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30 Answers
30
Active
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Can clearInterval() be called inside setInterval()?
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Yes you can. You can even test it:
var i = 0;
var timer = setInterval(function() {
console.log(++i);
if (i === 5) clearInterval(timer);
console.log('post-interval'); //this will still run after clearing
}, 200);
In this example, this timer clears whe...
MySQL SELECT WHERE datetime matches day (and not necessarily time)
...wing 4 records, then only the 2nd and 3rd would be returned if I limit to 2012-12-25.
4 Answers
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