How to identify Combobox control (HTML)

[anuj_web]

Hi...


How can i identify the type of a combobox element..
like the text box is identified by the type "text"

I got that one....
but when I try to check the values of all the comboboxes it does not work

function Validate(theform)
{
var elem = document.getElementById('theform').elements;
for(var i = 0; i < elem.length; i++)
{
if(elem[i].type="select-one" && elem[i].value="")
{
alert('You have not selected all required Parameters');
theform.action="";
theform.submit;
}
else
{
theform.action="Search.php";
theform.submit;
}
} 

}

I cannot access the control type and its value in this code and hence ...I think this is why the code does not give the output ... i.e no alert is generated

thanks

 

[woiwky]

You're using a single = instead of a double. So you need to change

if(elem.type="select-one" && elem.value="")

to

if(elem.type=="select-one" && elem.value=="")

 

[marshian]

I think that's right, but for the sake of making your code readable, use
if((elem.type=="select-one") && elem.value=="")

 

[anuj_web]

Hi..

it does not work even after that

function Validate(theform)
{
var elem = document.getElementById('theform').elements;
for(var i = 0; i < elem.length; i++)
{
if(elem[i].type=="select-one" && elem[i].value=="")
{
alert('You have not selected all required Parameters');
theform.action="";
theform.submit;
}
else
{
theform.action="Search.php";
theform.submit;
}
} 
}

still even the alert does not come up.....

i think i am faulting with the "form" passing
wat should i pass to the function "validate" as as argument ??

 

[woiwky]

If the call is in the onsubmit event of your form element, it should be Validate(this). That is,

<form onsubmit="Validate(this);">

Also, you can use theform.elements instead of document.getElementById('theform').elements if the form object is being passed correctly.

 

[anuj_web]

It works now thanks...i feel the problem was with the "form" passing itself