placeholder

github:https://raw.github.com/mathiasbynens/jquery-placeholder/master/jquery.placeholder.js
demo:http://mathiasbynens.be/demo/placeholder

HTML5 Placeholder jQuery Plugin

Check out the HTML5 Placeholder jQuery Plugin project page on GitHub.

$(function() {
 $('input, textarea').placeholder();
});

type=search

type=text

type=email

type=url

type=tel

type=password

textarea

— Mathias

多线程测试

JUNIT 不支持多线程
http://groboutils.sourceforge.net/

import java.util.ArrayList;
import java.util.List;
import java.util.Random;


import net.sourceforge.groboutils.junit.v1.MultiThreadedTestRunner;
import net.sourceforge.groboutils.junit.v1.TestRunnable;


import org.junit.Test; 

class TestRunnableImpl extends TestRunnable{ 
@Override
public void runTest() throws Throwable {
//do something
}

}
public class MutilThreadTest { 
@Test
public void transaction() throws Throwable{ 
  List<TestRunnable> list = new ArrayList<TestRunnable>();
for (int i = 0; i < 50; i++) {
list.add(new TestRunnableImpl(ctx));
}
TestRunnable[] empty = new TestRunnable[0];
MultiThreadedTestRunner mttr = new MultiThreadedTestRunner( list.toArray(empty) );
                mttr.runTestRunnables( 2 * 60 * 1000 );
} 
}

checkbox全选的设计

http://viralpatel.net/blogs/2010/11/multiple-checkbox-select-deselect-jquery-tutorial-example.html

<SCRIPT language="javascript">

$(function(){

 

    // add multiple select / deselect functionality

    $("#selectall").click(function () {

          $('.case').attr('checked', this.checked);

    });

 

    // if all checkbox are selected, check the selectall checkbox

    // and viceversa

    $(".case").click(function(){

 

        if($(".case").length == $(".case:checked").length) {

            $("#selectall").attr("checked", "checked");

        } else {

            $("#selectall").removeAttr("checked");

        }

 

    });

});

</SCRIPT>