Input+select (multiple) Implementation of Drop-down box input value _javascript technique

And then try to use Input+select to achieve, the result is as follows:

Specific code and demo address:www.homdian.com/test.aspx

This method is actually in the Drop-down box to press a text box, can implement input, but also to achieve the choice of Drop-down box. However, depending on the input value, when you bind the Pull box option in an asynchronous manner,

Unable to expand the dropdown box, went to the internet to find a piece of code:

Copy Code code as follows:

Document.form1.ddlMovName.focus ();
var WshShell = new ActiveXObject ("Wscript.Shell");
try{
Wshshell.sendkeys ("%{down}");
}
catch (e) {}
Wshshell.quit;

The above paragraph can be implemented to expand the Drop-down box, but will pop up the following prompts (test environment IE7)

It doesn't feel friendly, so it doesn't work. And then try to use Input+select (multiple), the effect is as follows:

Specific code and demo address:www.homdian.com/test1.aspx

This method has basically met my needs, posted here, I hope you can provide a better way. Thank you.