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Pure JavaScript Send POST Data Without a Form
...unction () {
if (this.readyState != 4) return;
if (this.status == 200) {
var data = JSON.parse(this.responseText);
// we get the returned data
}
// end of state change: it can be after some time (async)
};
xhr.open('GET', yourUrl, true);
xhr.send();
...
HTTP authentication logout via PHP
...edirect';
} else {
xmlhttp.open("GET", '/path/that/will/return/200/OK', true, "logout", "logout");
xmlhttp.send("");
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4) {window.location.href='/where/to/redirect';}
}
}
ret...
Iterate an iterator by chunks (of n) in Python? [duplicate]
...eat for small n, but for large groups, is very inefficient. My n, e.g., is 200,000. Creating a temporary list of 200K items is...not ideal.
– Jonathan Eunice
Apr 24 '15 at 0:02
2
...
Adding an arbitrary line to a matplotlib plot in ipython notebook
..., 70], [100, 250], 'k-', lw=2)
# draw diagonal line from (70, 90) to (90, 200)
plt.plot([70, 90], [90, 200], 'k-')
plt.show()
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What are the best JVM settings for Eclipse? [closed]
... a full-fledge Eclipse on our crappy workstation at work, some old P4 from 2002 with 2Go RAM and XPSp3. But I have also tested those same settings on Windows7)
Eclipse.ini
WARNING: for non-windows platform, use the Sun proprietary option -XX:MaxPermSize instead of the Eclipse proprietary option...
How can I use if/else in a dictionary comprehension?
...e': 'Material Name', 'maxt': 'Max Working Temperature', 'ther': {100: 1.1, 200: 1.2}}
a_dic, b_dic = {}, {}
for field, value in entries.items():
if field == 'ther':
for k,v in value.items():
b_dic[k] = v
a_dic[field] = b_dic
else:
a_dic[field] = value
...
Easy way to test a URL for 404 in PHP?
...odified version of code from "stuart at sixletterwords dot com", at 14-Sep-2005 04:52. This version tries to emulate get_headers() function at PHP4. I think it works fairly well, and is simple. It is not the best emulation available, but it works.
Features:
- supports (and requires) full URLs.
- su...
How do I create a dynamic key to be added to a JavaScript object variable [duplicate]
...ty. If you set a property with a numeric key on an array instance:
myArray[200] = 5;
then (assuming that "200" is the biggest numeric property name) the length property will be updated to 201 as a side-effect of the property assignment. If the same thing is done to a plain object, however:
myObj[20...
How to manage a redirect request after a jQuery Ajax call
...ed JSON. In this case, all responses to AJAX requests have the status code 200 and the body of the response contains a JSON object that is constructed on the server. The JavaScript on the client can then use the JSON object to decide what it needs to do.
I had a similar problem to yours. I perform ...
Automatic Retina images for web sites
...'s say your image is 400px wide and tall - just specify the image width as 200px to make it look sharp like this:
<img src="img.jpg" width="200px" height="200px" />
If your image is photographic, you can probably increase the JPG compression on it without making it look worse, because the J...