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JS - get image width and height from the base64 code
....naturalHeight had the best results.
const img = new Image();
img.src = 'https://via.placeholder.com/350x150';
img.onload = function() {
const imgWidth = img.naturalWidth;
const imgHeight = img.naturalHeight;
console.log('imgWidth: ', imgWidth);
console.log('imgHeight: ', imgHeight);
};
...
jQuery - checkbox enable/disable
... {
$("input.group1").attr("disabled", true);
}
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<form name="frmChkForm" id="frmChkForm">
<input type="checkbox" name="chkcc9" id="group1">Check Me <br>
<input ...
PHP validation/regex for URL
...nto issues, but I'm sure it's not exhaustive:
$text = preg_replace(
'#((https?|ftp)://(\S*?\.\S*?))([\s)\[\]{},;"\':<]|\.\s|$)#i',
"'<a href=\"$1\" target=\"_blank\">$3</a>$4'",
$text
);
Most of the random junk at the end is to deal with situations like http://domain.com. in ...
Entity Framework - Start Over - Undo/Rollback All Migrations
...Update-Database -Migration 0
Remove-Migration
The documentation is here: https://docs.microsoft.com/en-us/ef/core/miscellaneous/cli/powershell#update-database
and here: https://docs.microsoft.com/en-us/ef/core/miscellaneous/cli/powershell#remove-migration
...
How to change value of process.env.PORT in node.js?
...
You can use cross platform solution https://www.npmjs.com/package/cross-env
$ cross-env PORT=1234
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follo...
Node.js: Difference between req.query[] and req.params
...
Suppose you have defined your route name like this:
https://localhost:3000/user/:userid
which will become:
https://localhost:3000/user/5896544
Here, if you will print:
request.params
{
userId : 5896544
}
so
request.params.userId = 5896544
so request.params is an ob...
format date with moment.js
...ment(testDate).format('MM/DD/YYYY');
msg.innerText= s;
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>
<div id="msg"></div>
to omit this warning you should provide parsing format
var testDate= "Fri Apr 12 2013 1...
Python: Get the first character of the first string in a list?
...:
"Losing your Loops, Fast Numerical Computing with NumPy" by PyCon 2015:
https://youtu.be/EEUXKG97YRw?t=22m22s
"NumPy Beginner | SciPy 2016 Tutorial" by Alexandre Chabot LeClerc:
https://youtu.be/gtejJ3RCddE?t=1h24m54s
sh...
How to migrate back from initial migration in Django 1.7?
...e the version number:
python manage.py migrate <app> 0002
Source: https://docs.djangoproject.com/en/1.7/ref/django-admin/#django-admin-migrate
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...
Views vs Components in Ember.js
...ur app, it's best to stay away from Views.
Sources:
Road to Ember 2.0: https://github.com/emberjs/rfcs/pull/15
Future-proofing your Ember 1.x code: https://gist.github.com/samselikoff/1d7300ce59d216fdaf97
There is no view, only component (Tom Dale): https://speakerdeck.com/tomdale/ember-2-dot-0-...