The javascript code that makes the first control on the page selected by default_form effects

When a form is displayed on the page, the focus is usually not on the first control. This effect can be achieved with just a little common script.
document.forms[0].elements[0].focus();
If the first control on the page is a hidden field, or does not support focus(), the above javascript may cause an error!

Copy code The code is as follows:

var formutil = new Object;
formutil.focusOnfirst = function()
{
if(document.forms.length>0){
var item = document.forms[0].elements.length;
for(var i=0;i< ;item;i ){
if(document.forms[0].elements[i].type !="hidden"){
document.forms[0].elements[i].focus();
return;
}
}
}
}