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How to get just numeric part of CSS property with jQuery?
...le:
var marginBottom = "10px";
marginBottom = parseInt(marginBottom, 10);
alert(marginBottom); // alerts: 10
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how to break the _.each function in underscore.js
...oluted like this (link to JSFiddle):
[1, 2, 3, 4].every(function(n) {
alert(n);
return n !== 3;
});
This will alert 1 through 3, and then "break" out of the loop.
You're using underscore.js, so you'll be pleased to learn that it does provide an every method—they call it every, but as t...
How to delete a file or folder?
...
os.remove() removes a file.
os.rmdir() removes an empty directory.
shutil.rmtree() deletes a directory and all its contents.
Path objects from the Python 3.4+ pathlib module also expose these instance methods:
pathlib.P...
Get the value in an input text box
...his:
$(document).ready(function(){
$("#txt_name").keyup(function(){
alert(this.value);
});
});
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How to check what version of jQuery is loaded?
...ry != 'undefined') {
// jQuery is loaded => print the version
alert(jQuery.fn.jquery);
}
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How to delete the contents of a folder?
...
import os, shutil
folder = '/path/to/folder'
for filename in os.listdir(folder):
file_path = os.path.join(folder, filename)
try:
if os.path.isfile(file_path) or os.path.islink(file_path):
os.unlink(file_p...
Moment.js - how do I get the number of years since a date, not rounded up?
... fraction values:
var years = moment().diff('1981-01-01', 'years',false);
alert( years);
if you want fraction values:
var years = moment().diff('1981-01-01', 'years',true);
alert( years);
Units can be [seconds, minutes, hours, days, weeks, months, years]
...
How do I grep for all non-ASCII characters?
...roblems arising from replacing a system utility, since system-specific Mac scripts now depend on BSD grep.
– Joel Purra
Jun 24 '14 at 7:37
...
Prevent a webpage from navigating away using JavaScript
...nt the browser window/tab from closing.
window.onunload = function () {
alert('You are trying to leave.');
return false;
}
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第一个Hello,OS World操作系统 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
第一个Hello,OS World操作系统hello_os_word_my_first_os操作系统并非我们想象中的深不可测、遥不可及，只要你对它感兴趣并随我一起动手实践，你也能开发出属于自己的os。本文通过一个最简单的os，完成Hello, OS World文字的输出来演示os...