大约有 42,000 项符合查询结果（耗时：0.0559秒） [XML]
jquery select change event get selected option
... What does the $("selector", this) syntax mean? I have a general idea, but I'm not totally sure
– JoshWillik
Jan 20 '14 at 22:08
14
...
jQuery equivalent of getting the context of a Canvas
...TML element:
var myCanvasElem = $("#canvas").get(0);
Perhaps to help avoid any potential null object references since jquery returns null as an object but working with the element from .get(0) may not fail so silently... You can easily check if the canvas was found first before .get(0) like
if...
How do I create multiple submit buttons for the same form in Rails?
...
You can create multiple submit buttons and provide a different value to each:
<% form_for(something) do |f| %>
..
<%= f.submit 'A' %>
<%= f.submit 'B' %>
..
<% end %>
This will output:
<input type="submit" value="A" id=".." n...
#define macro for debug printing in C?
... notation is not supported in earlier versions). The do { ... } while (0) idiom ensures that the code acts like a statement (function call). The unconditional use of the code ensures that the compiler always checks that your debug code is valid — but the optimizer will remove the code when DEBUG...
Importing Maven project into Eclipse
...ateimport an existing maven project with Eclipse. Actually, it doesn't provide real integration, it just generates the .project and .classpath files (it has also WTP support) from a Maven project. I've used this plugin during years and was very happy with it (and very unsatisfied at this time by Ecl...
How to vertically center a div for all browsers?
...ound solution I could build to vertically and horizontally center a fixed-width, flexible height content box. It was tested and working for recent versions of Firefox, Opera, Chrome, and Safari.
.outer {
display: table;
position: absolute;
top: 0;
left: 0;
height: 100%;
width:...
jQuery check if an input is type checkbox?
...
>>> a=$("#communitymode")[0]
<input id="communitymode" type="checkbox" name="communitymode">
>>> a.type
"checkbox"
Or, more of the style of jQuery:
$("#myinput").attr('type') == 'checkbox'
...
Add new attribute (element) to JSON object using JavaScript
...
object["property"] = value;
or
object.property = value;
If you provide some extra info like exactly what you need to do in context you might get a more tailored answer.
share
|
improve this ...
Android WebView: handling orientation changes
...f you do not want the WebView to reload on orientation changes simply override onConfigurationChanged in your Activity class:
@Override
public void onConfigurationChanged(Configuration newConfig){
super.onConfigurationChanged(newConfig);
}
And set the android:configChanges attribute ...
Xcode: Build Failed, but no error messages
...port Navigator present in Navigator window.
Open Navigator by pressing Hide/Show Navigator button present in top-left side of Xcode.
Open Report Navigator by pressing last button present on list of buttons in Navigator window.
Here you can view reasons either By Group or By Time
...