Month: July 2015

Let’s say you have a checkbox like the following

<input type=”checkbox” id=”leCheckBox”>

To check if it’s checked or not, use:

var leCheckBoxIsChecked = $(“#leCheckBox:checked”).length>0;

It will returns true if the checkbox is checked and false otherwise.

To check the checkbox programmatically:

$(“#leCheckBox”).prop(“checked”, “true”);

To uncheck the checkbox programmatically:

$(“#leCheckBox”).removeAttr(“checked”)

When developing android app that sends requests to a web service written in PHP, we need to configure XDebug and Netbeans to break when an external request(from an Android app, for example) is sent.

Modify php.ini:

xdebug.remote_autostart = 1
xdebug.idekey=”netbeans-xdebug”

In Netbeans, debug a random file, click continue when it breaks at initial breakpoint.

Run the Android app, Netbeans will break when the app sends a request to the php page.

open php.ini and uncomment, modify, add these lines

[XDebug]
zend_extension = “C:xamppphpextphp_xdebug.dll”
;xdebug.profiler_append = 0
;xdebug.profiler_enable = 1
;xdebug.profiler_enable_trigger = 0
;xdebug.profiler_output_dir = “C:xampptmp”
;xdebug.profiler_output_name = “cachegrind.out.%t-%s”
xdebug.remote_enable = 1
xdebug.remote_handler = “dbgp”
xdebug.remote_host = “127.0.0.1”
xdebug.remote_port=9000
xdebug.remote_mode=req
xdebug.idekey=”netbeans-xdebug”
;xdebug.trace_output_dir = “C:xampptmp”

make sure the line “zend_extension…” is uncommented andxdebug.remote_enable is set to 1.

xdebug.idekey should be set to be the same as Netbeans’ PHP debug setting, by default it’s “netbeans-xdebug”. Same for remote_port and remote_mode.

Check whether there are overflows in div tags. Use your finger to scroll on different areas to determine the element that has overflow.

Add style overflow:hidden to the tags that have overflow to fix this problem.

Don’t use cached labels in any way.

1.Enable page output caching.

2. web gardening is not supported by Sharepoint, so don’t enable it.

Tips for debugging PHP PDO statements:

get the return value of $statement->execute(). It returns true on success and false on failure.

use $statement->errorInfo(), to find out exactly the error in the query.

Make use of xdebug and netbeans’ debugging capability.

Configure PDO to throw exception when errors occur

$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 

Notepad++ macro feature.

When updating remember to call Item.update

to troubleshoot webpart problems if the page doesn’t load correctly, can be used to disable malfunctioned web parts.