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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 ...
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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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...
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...