why this is not happen in my code

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i have two dropdownlist in one span
same down down list in second span
both span select hours and minute form drop down
for this i use this code

SQL

<select id="hourselect" size="1" onclick="loadhourselector()"></select>
                           <select id="minuteselect" size="1" onclick="loadminuteselector()"></select>

C#

function loadhourselector()
        {
            var start_time = 00;
            var end_time = 23;
            for (var i = start_time; i <= end_time; i++)
            {
                node = document.createElement("Option");
                textnode = document.createTextNode(i);
                node.appendChild(textnode);
                document.getElementById("hourselect").appendChild(node);

            }
        }
        function loadminuteselector()
        {
            var start_time = 00;
            var end_time = 59;
            for (var i = start_time; i <= end_time; i++)
            {
                node = document.createElement("Option");
                textnode = document.createTextNode(i);
                node.appendChild(textnode);
                document.getElementById("minuteselect").appendChild(node);
            }
        }

this work for fist span drop down list but when i want to apply on second span it not take input
why??
code for second span

SQL

<select id="hourselect" size="1" onclick="loadhourselector()"></select>
                            <select id="minuteselect" size="1" onclick="loadminuteselector()"></select>

Posted 4-Sep-14 0:42am

Member 10891595

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Comments

kbrandwijk 4-Sep-14 6:51am

Providing the right tags helps a lot in getting the right answers. This is a HTML / Javascript question, that has nothing to do with C#. Please update tags accordingly.

Gihan Liyanage 4-Sep-14 7:09am

Both codes for 2 spans are same.. Is it mistake when writing here, or even in the code ???

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kbrandwijk · Accepted Answer · 2014-09-04T00:50:00

You have duplicate id's, in both spans, the selects have id 'hourselect' and 'minuteselect'.
In your JS functions, you call document.getElementById. Depending on which browser you use, you can get different behavior because of duplicate id's.

You should probably use the loadhourselector(this) pattern, and use the 'this' passed to the function to call appendChild on:

JavaScript

function loadhourselector(element)
{
    var start_time = 00;
    var end_time = 23;
    for (var i = start_time; i <= end_time; i++)
    {
        node = document.createElement("Option");
        textnode = document.createTextNode(i);
        node.appendChild(textnode);
        element.appendChild(node);
    }
}

HTML

<select id="hourselect" size="1" onclick="loadhourselector(this)"></select>