html 的 checkbox 有部分选择状态？

[ddyy]

刚在phpmyadmin看到的，震惊了

[lingyired]

js + icon

[sneezry]

有，checkbox的indeterminate属性

[rannnn]

@lingyired checkbox.indeterminate = true

[dong3580]

http://images.cnblogs.com/cnblogs_com/birdshome/NormalArticle/2005/CheckBox.gif

[ddyy]

今天彻底震惊了，接触html满打满算11年了，今天刚发现这个特性

[lingyired]

@rannnn thanks

[chemzqm]

The :indeterminate CSS pseudo-class represents any <input type="checkbox"> element whose indeterminate DOM property is set to true by JavaScript. In addition, in some browsers, it can be used to match to <progress> elements in an indeterminate state

ie要10才支持，不过不支持也没啥影响