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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 get the image src
...for relative image url ' + $('#imageId').attr('src'));
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<img id='imageId' src='images/image1.jpg' height='50px' width='50px'/>
<input type='button' onclick='showImgUrl()' value='click...
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 ...
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...
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
...
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...
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...
Should URL be case sensitive?
...ipedia is case sensitive except the first character of the title. The URLs https://en.wikipedia.org/wiki/Case_sensitivity and https://en.wikipedia.org/wiki/case_sensitivity leads to the same article, but https://en.wikipedia.org/wiki/CASE_SENSITIVITY returns 404.
...
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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...
Scaling Node.js
...and the also don't transmit passwords via plain-text but thank for god use https. I also have answered a topic for a user who wanted to use facebook-connect.
validation of input data
To validate input you could use node-validator.
var check = require('validator').check,
sanitize = require('v...