If there are 50 rows, why does JS run 49 rows? this is my code
var todoCorrecto = true;
var formulario = document.enviaComision;
for (var w = 1; w < formulario.length; w++) {
if (formulario[w].type == 'text') {
if (formulario[w].value == "") {
console.log(w);
todoCorrecto = false;
}
}
} How would you make it go through the 50 rows?
The indexes of arrays in JavaScript begin in 0 no in 1 . Therefore you must initialize var w = 0 in for
var todoCorrecto = true;
var formulario = document.enviaComision;
for (var w = 0; w < formulario.length; w++) {
if (formulario[w].type == 'text') {
if (formulario[w].value == "") {
console.log(w);
todoCorrecto = false;
}
}
}
Maybe var formulario = document.enviaComision; is an array and at the moment of crossing it you are not starting var w = 0; in the cycle for for (var w = 1; w < formulario.length; w++) { Try changing it to 0 the variable w.
But in the same way I'll give you another example, I hope it works for you:
var a = document.querySelectorAll("form input[type='text']"); //buscamos todos los input's de tipo text que esten dentro del form
for(var b in a) // como nos entrega un Array, entonces recorremos ó iteramos
{
var c = a[b];
if(typeof c == "object"){ //verificamos que todo sea un objeto
console.log(a.item(b),b); // Imprimimos el item de la posición b y tambien la posición del array b.
}
}<form name="miformulario">
<input type="text" name="uno" />
<input type="text" name="dos" />
<input type="text" name="tres" />
<input type="text" name="cuatro" />
<input type="text" name="cinco" />
<input type="text" name="seis" />
<input type="text" name="siete" />
<input type="text" name="ocho" />
<input type="text" name="nueve" />
<input type="text" name="diez" />
</form>