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Generate random string/characters in JavaScript
...generateId :: Integer -> String
function generateId (len) {
var arr = new Uint8Array((len || 40) / 2)
window.crypto.getRandomValues(arr)
return Array.from(arr, dec2hex).join('')
}
console.log(generateId())
// "82defcf324571e70b0521d79cce2bf3fffccd69"
console.log(generateId(20))
// "c1a050...
1052: Column 'id' in field list is ambiguous
I have 2 tables. tbl_names and tbl_section which has both the id field in them. How do I go about selecting the id field, because I always get this error:
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Moving multiple files in TFS Source Control
...io commandline - it can handle wildcards:
tf.exe move <olditem> <newitem>
Example:
tf.exe move "$/My Project/V*" "$/My Project/Archive"
[EDIT] As noted in the comments: move is an alias for rename. Both commands move history.
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jQuery: Count number of list elements?
...eed to know the size? Can't you just use:
$("#mylist").append("<li>New list item</li>");
?
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Change drawable color programmatically
...answered Oct 6 '16 at 9:40
amorenewamorenew
9,00866 gold badges3535 silver badges5555 bronze badges
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How to make child process die after parent exits?
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@maxschlepzig Thanks for the new link. Seems like the previous link is invalid. By the way, after years, there's still no api for setting options on the parent side. What a pity.
– rox
Apr 27 '17 at 3:47
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How do I remove the old history from a git repository?
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Just create a graft of the parent of your new root commit to no parent (or to an empty commit, e.g. the real root commit of your repository). E.g. echo "<NEW-ROOT-SHA1>" > .git/info/grafts
After creating the graft, it takes effect right away; you should be ...
What is mattr_accessor in a Rails module?
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f185573%2fwhat-is-mattr-accessor-in-a-rails-module%23new-answer', 'question_page');
}
);
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On select change, get data attribute value
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You need to find the selected option:
$(this).find(':selected').data('id')
or
$(this).find(':selected').attr('data-id')
although the first method is preferred.
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Chrome Extension how to send data from content script to popup.html
... this has been asked in numerous posts but honestly I don't get them. I am new to JavaScript, Chrome Extensions and everything and I have this class assignment.
So I need to make a plugin that would count DOM objects on any given page using Cross Domain Requests.
I've been able to achieve this so f...