Javascript operations on dom in iframe (example) _ javascript skills

This article mainly introduces the dom in the iframe for JS operations. If you need it, you can refer to it. I hope it will help you to directly assign the following code for testing:

1. html:

The Code is as follows:

Untitled document

================================ Note: the test starts from here ============================

Used to test an element of the child form iframeA accessing the parent form

============================== Iframe ========

============================== Iframe ========

First Demonstration: the parent form accesses a method or element in the child form.

Conclusion: The methods for accessing child forms from the parent form are different from those for elements.