Removing all but first item in drop down list

[Chris]

How do I amend the following code to skip removing the first option in
my dropdown list i.e. I want the first option "Please select..." to
stay?

while (document.getElementById("mycombo").childNodes.length > 0) {
document.getElementById("mycombo").removeChild(document.getElementById("mycombo").childNodes[0])
}

Many thanks,

Chris

 

[Gregor Kofler]

Chris meinte:

How do I amend the following code to skip removing the first option in
my dropdown list i.e. I want the first option "Please select..." to
stay?

Untested:

var e = document.getElementById("mycombo");
while (e.childNodes.length > 1) {
e.removeChild(e.lastChild);
}

Gregor

 

[liamgegan]

var oplist=document.getElementById("mycombo");
for(var i = oplist.options.length-1;i>0;i--)
{
oplist.removeChild(oplist.options);
}

 

[Jorge]

How do I amend the following code to skip removing the first option in
my dropdown list i.e. I want the first option "Please select..." to
stay?

while (document.getElementById("mycombo").childNodes.length > 0) {
document.getElementById("mycombo").removeChild(document.getElementById("myc ombo").childNodes[0])
}

var e= document.getElementById("mycombo");
while (e.firstChild !== (d= e.lastChild)) { e.removeChild(d); }


If there are many children this might be faster:

var e= document.getElementById("mycombo"), d= e.firstChild;
e.innerHTML= "";
e.appendChild(d);

 

[Amrit Ranjan]

I think
document.getElementById("mycombo").length = 1;
will be more than enough.

 

[Amrit Ranjan]

I think
document.getElementById("mycombo").length = 1;
will be more than enough.

 

[Chris]

I think
            document.getElementById("mycombo").length = 1;
will be more than enough.

Didn't get it at first Amrit but thanks, very clever!

Chris

 

[Gregor Kofler]

Conrad Lender meinte:

How do I amend the following code to skip removing the first option
in my dropdown list i.e. I want the first option "Please select..."
to stay?

while (document.getElementById("mycombo").childNodes.length > 0) {
document.getElementById("mycombo").removeChild(document.getElementById("mycombo").childNodes[0])
}

document.getElementById("mycombo").options.length = 1;

Will this free the ressources occupied by the now discarded options, too?

Gregor