html - javascript - How to get a specific form from a forms array without knowing the number of forms in the page -

i have html page multiple forms:

forms1 forms2 forms3 forms4 . . . formsn

in javascript know can deal specific form forms array:

document.forms[2]

but how can n form without knowing number of forms?

something that:

n = numbnerofforms document.forms[n] document.forms[n-1]

i think document.form.length want. returns length of array; in case form array.

note: if , array is:

a ['q','w','e','r','t','y']

array.lenght return 6, useful when nedd cicle via array

for (var = 0; < array.length; i++) {   // ... }

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