Js: a simple example of traversing form elements

In js, we can use length to get the number of elements in a form, and then traverse the elements in the form through this length. This article introduces a simple example of traversing form elements. For more information about the coders, see.

Script function doIt () {var form = document. forms [0]; // obtain the first form in the page for (var I = 0; I <form. elements. length; I ++) {console. log (form. elements [I]. value) ;}} script

In this example, the form has four more elements: Three text fields and one button.

Document. forms [0] is used to obtain the first form in the document (there is only one form on the page), then use length to obtain the length of the form, and then use for to traverse the form element and obtain the value of each element.

You can copy the code to this page and run it.