Bug description of getting the value of Button element in IE6 and IE7_javascript skills

The test code is as follows:

Copy code The code is as follows:

Test
<script> <br>var btn = document.getElementsByTagName('button')[0]; <br>alert(btn.value); <br>alert(btn. getAttribute('value')); <br></script>

IE6/7:

IE8/9/10/Firefox/Safari/Chrome/Opera:

i.e.:

In IE6/7, innerHTML is returned, which is an implementation error.