Recent Notes
Displaying keyword search results 1 - 10
Created by James on May 02, 2012 13:01:24
Last update: May 02, 2012 13:01:24
Use the .prev() function to find the previous sibling of the current element:
$(this).prev()
or
$(this).prev('.selected')
Created by jinx on April 29, 2011 13:43:13
Last update: April 29, 2011 13:44:34
List of functions testing variable type:
Function Description
is_bool Finds out whether a variable is a boolean
is_double Alias of is_float()
is_float Finds whether the type of a variable is float
is_int Find whether the type of a variable is integer
is_integer Alias of is_int()
is_long Alias of is_int()
is_null Finds whether a variable is NULL
is_numeric Finds whether a variable is a number or a numeric string
is_object Finds whether a variable is an object
is_real Alias of is_float()
is_scalar Finds whether a variable is a scalar
is_string Find whether the type of a variable is string
Test code:
<?php
class A {
}
$a = ar...
Output:
var_dump: int(1)
-------------------------
i...
Created by jinx on April 28, 2011 14:32:58
Last update: April 28, 2011 14:32:58
Use the is_array function to find out if a variable is array.
<?php
$a = array(
'1' => 'Apple',
...
Created by jinx on April 10, 2011 15:56:07
Last update: April 10, 2011 15:56:07
This is a utility function to find a string between two other strings, such as the text between the <title> tags in an HTML header.
<?php
$s = '<html><head><title>Find it!</title>...
Created by James on March 13, 2011 13:44:37
Last update: March 21, 2011 11:30:55
This is a jQuery input control that lets you enter any number of input rows of name and value pairs.
<!DOCTYPE html>
<html>
<head>
<title>jQu...
Created by James on September 03, 2010 15:52:12
Last update: January 11, 2011 20:22:40
Use the siblings function to find all siblings of the current jQuery object:
$(this).siblings()
which is equivalent to:
$(this).parent().children().not(this)
Or, use an optional selector to further limit the selection of siblings:
$(this).siblings('li .hilighted')
Test page:
<!DOCTYPE html>
<html>
<head>
<title>jQu...
Created by James on September 03, 2010 16:12:30
Last update: September 03, 2010 16:12:30
Hide all DIV within contents except the one selected by a dropdown selector:
function displayDiv(selector) {
$('#contents')...
This is the description of end() from jQuery doc :
End the most recent filtering operation in the current chain and return the set of matched elements to its previous state.
Created by Fang on August 18, 2010 20:07:46
Last update: August 18, 2010 20:11:36
JSTL uses XPath expressions as a concise notation to specify or select parts of an XML document. JSTL provides EL like expressions to access web application data and comes with the core function library of the XPath specification. Accessing Web Application Data XPath Expression Mapping $foo pageContext.findAttribute("foo") $param:foo request.getParameter("foo") $header:foo request.getHeader("foo") $cookie:foo maps to the cookie's value for name foo $initParam:foo application.getInitParameter("foo") $pageScope:foo pageContext.getAttribute("foo", PageContext.PAGE_SCOPE) $requestScope:foo pageContext.getAttribute("foo", PageContext.REQUEST_SCOPE) $sessionScope:foo pageContext.getAttribute("foo", PageContext.SESSION_SCOPE) $applicationScope:foo pageContext.getAttribute("foo", PageContext.APPLICATION_SCOPE) For example, to find the bar element whose x attribute equals the value of the HTTP request parameter named paramName :
/foo/bar[@x=$param:paramName] Java Type to XPath Type Mappings XPath Type Java Type java.lang.Boolean boolean java.lang.Number number java.lang.String string Object exported by <x:parse> node-set Please note that JSTL, as of version 1.2,...
Created by Fang on August 17, 2010 21:08:13
Last update: August 17, 2010 21:08:13
JSTL string manipulation functions
String manipulation functions are simple and self-evident. You just need to know that they exist.
Test it
Make these additions to the expanded test application :
Create a new Java class StringManipulation :
package jstl.demo.handler;
import java....
Create a new JSP ( stringmanipulation.jsp ) under webapp :
<%@ taglib uri="http://java.sun.com/jsp/jstl/c...
Compile and package the WAR with: mvn package
Deploy the WAR to a servlet container of your choice (for example, Tomcat or JBoss).
Test the page with this URL (Tomcat/JBoss running on port 8080):
http://localhost:8080/jstl-demo/demo/StringManipulation
You may adjust the URL if your servlet container runs on a different port or the web app is bound to a different context root.
Created by Dr. Xi on September 02, 2008 18:55:18
Last update: January 18, 2010 22:36:24
Remember the times when you googled for solutions to your technical problems? How much time did you spend on wading through the zillions of links to find the ones that are of interest to you? Wouldn't you hope that you can find the answer right away the second time around? How many times were you forced to peruse hundreds of pages of documentation for a very specific need? Did you ever need to experiment with various alternatives because the documentation was vague? Wouldn't you prefer that a shortcut is available when the same thing is needed again? Xinotes is here to record your technical findings so that you won't have to go through the same process again when the problem reappears. Experience has taught us...
