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;
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