id(name)が一意

		属性	指定方法
MAN FEMALE		type="radio" name="MAN" value="MAN" type="radio" name="FEMALE" value="FEMALE"	MAN FEMALE

id(name)が重複　valueが一意

MAN FEMALE

type="radio" name="SEX" value="OPT_MAN" type="radio" name="SEX" value="OPT_FEMALE"

OPT_MAN OPT_FEMALE

MAN FEMALE

type="checkbox" name="abc" value="CHK_MAN" type="checkbox" name="abc" value="CHK_FEMALE"

CHK_MAN CHK_FEMALE

id(name)重複　value重複　　id , name 複合で一意

みかん　 りんご

type="checkbox" id="fruit" value="1" type="checkbox" id="fruit" value="2"

fruit\1 fruit\2

大根 ニンジン

type="checkbox" id="vegetable" value="1" type="checkbox" id="vegetable" value="2"

vegetable\1 vegetable\2