表单中的复选框如何默认全选?
表单中的复选框如何默认全选? 您可以如果value 是a和bhttp://bbs.o2oa.net/data:image/png;base64,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
您也可以用 获得对象
var node = this.form.getField("xx").node;
自己写代码操作
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