Check all elements in form with Javascript

Question

I know javascript in the beginning level, but I have a problem.

I have 7 input elements in a form and I want all of them to be filled. I came up with t

Answer 1

With some simple vanilla JS, you can handle this in a lot more simplified way:

JavaScript

function validateForm(){
    var form = document.getElementById("register"), inputs = form.getElementsByTagName("input"), input = null, flag = true;
    for(var i = 0, len = inputs.length; i < len; i++) {
        input = inputs[i];
        if(!input.value) {
            flag = false;
            input.focus();
            alert("Please fill all the inputs");
            break;
        }
    }
    return(flag);
}

Then make sure you return the function within your form, either inline (bad practice):

Or in a more unobtrusive way:

window.onload = function(){
    var form = document.getElementById("register");
    form.onsubmit = function(){
        var inputs = form.getElementsByTagName("input"), input = null, flag = true;
        for(var i = 0, len = inputs.length; i < len; i++) {
            input = inputs[i];
            if(!input.value) {
                flag = false;
                input.focus();
                alert("Please fill all the inputs");
                break;
            }
        }
        return(flag);
    };
};