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What's the difference between event.stopPropagation and event.preventDefault?
...apis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="foo">
<button id="but">button</button>
</div>
stopPropagation
$("#but").click(function (event) {
event.stopPropagation()
})
$("#foo").click(function () {
alert("parent click ev...
How do I implement basic “Long Polling”?
...ly freeze up. This would better be done checking if the file contains a valid JSON response, and/or keeping a running total of requests-per-minute/second, and pausing appropriately.
If the page errors, it appends the error to the #messages div, waits 15 seconds and then tries again (identical to ho...
Generate Java classes from .XSD files…?
... that I want the element to be arranged in XML output.
@XmlAttribute(name="id", ...) indicates that id is an attribute to root element.
@XmlElement(....) indicates that I want price and name to be element within Item.
My Item.java is ready. I can then go ahead and create JAXB script for marshaling...
Finding sum of elements in Swift array
...lection of elements down to a single value by recursively applying the provided closure". We give it 0 as the initial value, and then, essentially, the closure { $0 + $1 }. Of course, we can simplify that to a single plus sign, because that's how Swift rolls.
...
cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
cpuid汇编指令cpuid指令cpuid就是一条读取CPU各种信息的一条指令，大概是从80486的某个版本开始就存在了。 CPUID这条指令，除了用于识别CPU（CPU的型号...cpuid指令
cpuid就是一条读取CPU各种信息的一条指令，大概是从80486的某个版...
Check if option is selected with jQuery, if not select a default
...y what you want to accomplish, this bit of code worked for me.
<select id="mySelect" multiple="multiple">
<option value="1">First</option>
<option value="2">Second</option>
<option value="3">Third</option>
<option value="4">Fourth</option&g...
Refresh Fragment at reload
In an android application I'm loading data from a Db into a TableView inside a Fragment . But when I reload the Fragment it displays the previous data. Can I repopulate the Fragment with current data instead of previous data?
...
Get notified when UITableView has finished asking for data?
...ink that subclassing UITableView's reloadData is the best approach :
- (void)reloadData {
NSLog(@"BEGIN reloadData");
[super reloadData];
NSLog(@"END reloadData");
}
reloadData doesn't end before the table has finish reload its data. So, when the second NSLog is fired, the table v...
Using margin:auto to vertically-align a div
...now, so just use that, as per this answer.
You can't use:
vertical-align:middle because it's not applicable to block-level elements
margin-top:auto and margin-bottom:auto because their used values would compute as zero
margin-top:-50% because percentage-based margin values are calculated relative t...
GROUP_CONCAT ORDER BY
...
You can use ORDER BY inside the GROUP_CONCAT function in this way:
SELECT li.client_id, group_concat(li.percentage ORDER BY li.views ASC) AS views,
group_concat(li.percentage ORDER BY li.percentage ASC)
FROM li GROUP BY client_id
...