大约有 6,100 项符合查询结果（耗时：0.0159秒） [XML]
What's the best way to retry an AJAX request on failure using jQuery?
...
Something like this:
$.ajax({
url : 'someurl',
type : 'POST',
data : ....,
tryCount : 0,
retryLimit : 3,
success : function(json) {
//do something
},
error : function(xhr, textStatus, errorThrown ) {
if (tex...
Force browser to download image files on click
.... Chrome deprecations and removals
announcement
function forceDownload(url, fileName){
var xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.responseType = "blob";
xhr.onload = function(){
var urlCreator = window.URL || window.webkitURL;
var imageUrl = u...
How to pass multiple parameters in a querystring
...he text of the linked section of the Wikipedia entry.)
Structure
A typical URL containing a query string is as follows:
http://server/path/program?query_string
When a server receives a request for such a page, it runs a program (if configured to do so), passing the query_string unchanged to the prog...
How to link a Facebook app with an existing fan page
...//www.facebook.com/dialog/pagetab?app_id=[YOUR_APP_KEY]&next=[REDIRECT_URL]
YOUR_APP_KEY You can get it from application settings, its App Id
REDIRECT_URL Any URL you want to redirect back to after adding the tab
Official Solution
Answer from @Dvir Levy is the official solution from Faceb...
How do I link to part of a page? (hash?)
...an id (e.g., <div id="foo">), then you can simply append #foo to the URL. Otherwise, you can't arbitrarily link to portions of a page.
Here's a complete example: <a href="http://example.com/page.html#foo">Jump to #foo on page.html</a>
Linking content on the same page example: &l...
How to determine MIME type of file in android?
...ld consider calling MimeTypeMap#getMimeTypeFromExtension(), like this:
// url = file path or whatever suitable URL you want.
public static String getMimeType(String url) {
String type = null;
String extension = MimeTypeMap.getFileExtensionFromUrl(url);
if (extension != null) {
t...
Generic htaccess redirect www to non-www
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You would only get an extra slash (at the start of the URL-path), if you'd placed these directives directly in the server config (or virtualhost). In .htaccess you should not be getting an extra slash. (Just to note, if you are performing this redirect in the server config then y...
Turn a string into a valid filename?
...ngo framework for how they create a "slug" from arbitrary text. A slug is URL- and filename- friendly.
The Django text utils define a function, slugify(), that's probably the gold standard for this kind of thing. Essentially, their code is the following.
def slugify(value):
"""
Normalize...
How to parse JSON data with jQuery / JavaScript?
...each() function to loop through the data:
$.ajax({
type: 'GET',
url: 'http://example/functions.php',
data: { get_param: 'value' },
dataType: 'json',
success: function (data) {
$.each(data, function(index, element) {
$('body').append($('<div>', {
...
Difference between BeautifulSoup and Scrapy crawler?
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Scrapy is a Web-spider or web scraper framework, You give Scrapy a root URL to start crawling, then you can specify constraints on how many (number of) URLs you want to crawl and fetch,etc. It is a complete framework for web-scraping or crawling.
While
BeautifulSoup is a parsing library which a...