how to enable or disable dropdown elements(values)...using javascript

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Guys please help me out,

I want to know how to enable or disable DropDown elements:
example:

XML

<select name="time_select">
<option>10:00AM</option>
<option>1:30</option>
<option>5:00PM</option>
<option>7:30PM</option>
<option>10:00PM</option>
</select>

here i want to check the time from the browser and if the time is greater than the value in the option than ~~THAT PARTICULAR VALUE SHOULD BE DISABLED.~~ that particular value should be disabled.

~~thanx~~Thanks.

Posted 19-Mar-11 18:31pm

sabby006

Updated 19-Mar-11 19:15pm

Albin Abel

v3

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sabby006 20-Mar-11 11:21am

hey thanx alben for reply but ..can you please give me the html code for this also.. and i basically want to compare current time with select time and disable or give an alert box .

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Albin Abel · Accepted Answer · 2011-03-19T19:54:00

Solution 1

Your question is about how to compare time or how to disable an option?. If know the logic to compare the time then compare those list with the current time find which option to disable then you can use like this

SQL

function optionDisable(selectId, optionIndex){
    document.getElementById(selectId).children[optionIndex].disabled="disabled";
}

Note: optionIndex starts from 0

Posted 19-Mar-11 19:54pm

Albin Abel

Updated 19-Mar-11 19:55pm

v2

Comments

sabby006 20-Mar-11 11:21am

hey thanx alben for reply but ..can you please give me the html code for this also.. and i basically want to compare current time with select time and disable or give an alert box .

Sergey Alexandrovich Kryukov 20-Mar-11 21:59pm

This is your work. How come you don't want to write HTML yourself?
--SA

Sergey Alexandrovich Kryukov 20-Mar-11 21:59pm

My 5.
--SA

Albin Abel 20-Mar-11 23:02pm

Thanks. SAKryukov. Yesterday I was reading your trick about the queued thread. It is nice and I think you can post it as an article with some source codes. Because when you give that as a reference to beginners questions here, it may be little difficult for them to understand conceptually without a source code. What you think?