input checkbox 三种状态

input checkbox 三种状态

一种是选中,

HTML:

<INPUT TYPE="checkbox" checked="checked" />

Javascript:

document.getElementById('...').checked=true;
//document.getElementById('...').checked=false;

一种是未选中,
HTML:

<INPUT TYPE="checkbox" />

Javascript:

document.getElementById('...').checked=false;

一种是似选非选, 中间是一个小块的

Boolean that specifies or receives one of the following values.
false Default. Check box is not dimmed.
true Check box is checked and dimmed.

Javascript:(只能通过js来操作)

document.getElementById('...').indeterminate = true;
//document.getElementById('...').indeterminate = false;