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How to swap two variables in JavaScript
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Here's a one-liner to swap the values of two variables.
Given variables a and b:
b = [a, a = b][0];
Demonstration below:
var a=1,
b=2,
output=document.getElementById('output');
output.innerHTML="<p>Original: "+a+", "+b+"</p>";
b = [a, a = b][0];
output.innerHT...
How to center a button within a div?
...r, however Flexbox would be the correct approach now.
Live Demo
Vertical and horizontal alignment.
#wrapper {
display: flex;
align-items: center;
justify-content: center;
}
Just horizontal (as long as the main flex axis is horizontal which is default)
#wrapper {
display: flex;
justif...
Stop form refreshing page on submit
...fault();
});
Of course, in the function, you can check for empty fields, and if anything doesn't look right, e.preventDefault() will stop the submit.
Without jQuery:
var form = document.getElementById("myForm");
function handleForm(event) { event.preventDefault(); }
form.addEventListener('submi...
Is GET data also encrypted in HTTPS?
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The entire request is encrypted, including the URL, and even the command (GET). The only thing an intervening party such as a proxy server can glean is the destination address and port.
Note, however, that the Client Hello packet of a TLS handshake can advertise the fully qua...
jQuery Validate Plugin - How to create a simple custom rule?
...|| (parseFloat(value) > 0);
}, "* Amount must be greater than zero");
And then applying this like so:
$('validatorElement').validate({
rules : {
amount : { greaterThanZero : true }
}
});
Just change the contents of the 'addMethod' to validate your checkboxes.
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How to access a dictionary element in a Django template?
...objects.filter(choice=self).count()
votes = property(calculateVotes)
And then in your template, you can do:
{% for choice in choices %}
{{choice.choice}} - {{choice.votes}} <br />
{% endfor %}
The template tag, is IMHO a bit overkill for this solution, but it's not a terrible soluti...
Binding IIS Express to an IP Address [duplicate]
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that was it. Copied the applicationhost.config and modified the binding to <bindings> <binding protocol="http" bindingInformation=":8080:<ip address>" /> </bindings>
– jdiaz
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C# how to create a Guid value?
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Guid.NewGuid() creates a new random guid.
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In Rails, how do you render JSON using a view?
Suppose you're in your users controller and you want to get a json response for a show request, it'd be nice if you could create a file in your views/users/ dir, named show.json and after your users#show action is completed, it renders the file.
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What does the keyword Set actually do in VBA?
... A VB object reference is not quite the same as a C pointer. And there is no equivalent of "&i" in VB.
– Tomalak
Dec 8 '08 at 14:02
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