也就是说单选框如何鼠标移到上面，显示文字
下面这种好像不行
<input type = radion alt= "欢迎 "> A
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<input type = "radio " title= "欢迎 " id= "rdoBtn "> <label title= "欢迎 " for= "rdoBtn "> abc </label>
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title
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<input id= "test " type = "radio " title= "欢迎 "> <label title= "欢迎 " for= "test "> sdfsdfw </label>
我试了,没问题