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How to get a Docker container's IP address from the host
...
The --format option of inspect comes to the rescue.
Modern Docker client syntax is:
docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_name_or_id
Old Docker client syntax is:
docker inspect ...
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:
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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
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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.
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Restricting input to textbox: allowing only numbers and decimal point
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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 ...
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?
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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...
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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Preserve Line Breaks From TextArea When Writing To MySQL
...xt, ENT_QUOTES, 'UTF-8'));
$inputText is the text provided by either the form or textarea.
$textToStore is the returned text from nl2br and htmlentities, to be stored in your database.
ENT_QUOTES will convert both double and single quotes, so you'll have no trouble with those.
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Using HTML5/Canvas/JavaScript to take in-browser screenshots
...ng feedbacks like you described.
The script allows you to create feedback forms which include a screenshot, created on the client's browser, along with the form. The screenshot is based on the DOM and as such may not be 100% accurate to the real representation as it does not make an actual screensh...