Select all inputs text from body with JQuery

I just want to get all the <input type="text"></input> from the body of the html.

So far I have this:

function toUpper() {
    var elements = $("body input:text");
    for(var i=0; i<elements.lenght; i++){
        elements[i].val(elements[i].val().toUpperCase());
    }
}

But it doesn't work... I might be missing something on the JQuery S开发者_JAVA百科elector... But I don't know what.

Thank you!

function toUpper() {
    $("input:text").val(function(i, val) {
        return val.toUpperCase();
    });        
}

This is probably more convenient.
Demo: http://www.jsfiddle.net/4yUqL/85/

$("body input:text").each(function(){
         $(this).val($(this).val().toUpperCase());
});

Your selector is fine, although the body part is a bit unnecessary (I hope you don't have any inputs outside of the body).

But the rest is problematic. When you index a jquery object, you get the actual HtmlInputElement (or whatever) object, not a jquery wrapper around that object. So you can't use the jquery .val() command without first turning it into a jquery object. Here's a corrected version of your current code:

var elements = $("input:text");
for(var i = 0; i< elements.length; i++)
    $(elements[i]).val($(elements[i]).val().toUpperCase());

But the functional approach suggested by jAndy is a much cleaner way of doing it.