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What are valid values for the id attribute in HTML?
...se characters using a backslash in CSS or a double backslash in a selector string passed to jQuery. Think about how often you will have to escape a character in your stylesheets or code before you go crazy with periods and colons in ids.
For example, the HTML declaration <div id="first.name">...
How do you append to a file in Python?
... "a"), that a indicates the appending the file, that means allow to insert extra data to the existing file.
You can just use this following lines to append the text in your file
def FileSave(filename,content):
with open(filename, "a") as myfile:
myfile.write(content)
FileSave("test.tx...
Java SimpleDateFormat(“yyyy-MM-dd'T'HH:mm:ss'Z'”) gives timezone as IST
...without the quotes. Moreover you need to specify the timezone in the input string.
Example : 2013-09-29T18:46:19-0700
And the format as "yyyy-MM-dd'T'HH:mm:ssZ"
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What's the difference between using “let” and “var”?
...e initialization is processed." That means that the 'identifier' (the text-string 'reserved' to point to 'something') is already reserved in the relevant scope, otherwise it would become part of the root/host/window scope. To me personally, 'hoisting' means nothing more than reserving/linking declar...
Is there a way to auto expand objects in Chrome Dev Tools?
...
While the solution mentioning JSON.stringify is pretty great for most of the cases, it has a few limitations
It can not handle items with circular references where as console.log can take care of such objects elegantly.
Also, if you have a large tree, then a...
Difference between RegisterStartupScript and RegisterClientScriptBlock?
...cted void btnPostBack2_Click(object sender, EventArgs e)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append("<script language='javascript'>function ChangeColor() {");
sb.Append("var lbl = document.getElementById('lblDisplayDate');");
sb.Append("lbl.style.c...
Cleaning up the iPhone simulator
...up a customer's iPhone when you ship a new version with a new schema.
For extra points, after determining that you have encountered an old schema, you may want to copy the new database over without destroying the old one, and load any interesting data out of the old database, into the new one. T...
Showing which files have changed between two revisions
...eel special. I've bookmarked it in delicious.com for future reference and extra google-foo.
– Orwellophile
Oct 21 '15 at 15:29
...
How to overlay images
...
You put img into span, set z-index & position for both elements, and extra display for span. Add hover to span so you can test it and you got it!
HTML:
<span><img src="/images/"></span>
CSS
span img {
position:relative;
z-index:-1;
}
span {
Activity has leaked window that was originally added
...ct to the scene (shouldn't have happened but it did) but it didn't give an extra exception for it and the whole thing was masked by the "leaked window" exception instead.
– Neph
Sep 10 '18 at 12:47
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