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What does SynchronizationContext do?
...p running is dependent on the type of SynchronizationContext used.
Windows Forms will install a WindowsFormsSynchronizationContext on the thread on which the first form is created. (This thread is commonly called "the UI thread".) This type of synchronization context invokes the delegates passed to ...
Restricting input to textbox: allowing only numbers and decimal point
...
form.onsubmit = function(){
return textarea.value.match(/^\d+(\.\d+)?$/);
}
Is this what you're looking for?
I hope it helps.
EDIT: I edited my example above so that there can only be one period, preceded by at least ...
css label width not taking effect
I have a generic form, which I'd like to style to align the labels and the input fields.
For some reason when I give a width to the label selector, nothing happens:
...
How do I create a custom Error in JavaScript?
... Best answer, but taking Error.prototype directly is probably bad form. If you later want to add a NotImplementedError.prototype.toString the object now aliases to Error.prototype.toString -- better to do NotImplementedError.prototype = new Error().
– cdleary
...
Check if inputs are empty using jQuery
I have a form that I would like all fields to be filled in. If a field is clicked into and then not filled out, I would like to display a red background.
...
Convert System.Drawing.Color to RGB and Hex Value
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Took me a while to find the VB equivelant: String.Format("#{0:X2}{1:X2}{2:X2}", c.R, c.G, c.B)
– zacharydl
Jun 30 '14 at 19:37
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Can two Java methods have same name with different return types? [duplicate]
...name, the same type parameters (if any) (§8.4.4), and, after adapting the formal parameter types of N to the the type parameters of M, the same formal parameter types.
If both methods has different parameter types (so, they have different signature), then it is possible. It is called overloading....
Get file size, image width and height before upload
...ype) )
return EL_preview.insertAdjacentHTML('beforeend', `Unsupported format ${file.type}: ${file.name}<br>`);
const img = new Image();
img.addEventListener('load', () => {
EL_preview.appendChild(img);
EL_preview.insertAdjacentHTML('beforeend', `<div>${file.name...
Difference between RegisterStartupScript and RegisterClientScriptBlock?
...is that RegisterStartupScript puts the javascript before the closing </form> tag of the page and RegisterClientScriptBlock puts it right after the starting <form> tag of the page?
...
How to print last two columns using awk
...at the two examples of computing the field index in the spec both use that form: $(NF-1) and $(NF+2). Then there's the "Expressions in awk" section, which lists $expr as having [much] higher precedence than expr - expr. Since NF is an expression itself, $NF-1 should evaluate to ($NF)-1. Even IF, aft...