Form中，[input type=" checkbox " name="" value="" checked ]，checked表示该复选框缺省时是否被选中。

They packed and （）of the hotel． A: checked out B: checked over C: checked in D: checked into

It is essential that all these figures ______ twice. A: must be checked B: be checked C: is checked D: will be checked

It is essential that all these figures___twice. A: be checked B: are been checked C: being checked D: to be checked

It is essential that all these figures () twice. A: being checked B: are checked C: checked D: be checked

They packed and ______________ of the hotel. A: A. checked in B: B. checked out C: C. checked on D: D. checked by

input[type="radio"]:checked 将选择页面中所有处于选中状态的单选按钮。

【单选题】页面中有一个性别单选按钮,请设置”男”为选中状态。代码如下:[br][/br][input type="radio" name="sex"] 男[br][/br][input type="radio" name="sex"] 女 正确的是[br][/br](选择一项) A: $( sex[0] ).attr( checked ,true); B: $( C: sex[0] ).attr( checked ,true); D: $( [name=sex]:radio ).attr( checked ,true); E: $(":radio[name=sex]:eq(0)").attr("checked",true);

在网页中有如下HTML代码：[br][/br] [input type="radio" name="sex" value="man"/]男 [input type="radio" name="sex" value="woman"/]女 则设置选择状态为“女”，正确jquery实现代码为： A: $("input:radio").get(0).attr("checked",true); B: $( input[type=radio] )[1].attr( checked ,true); C: $( input[type=radio] ).eq(1).attr( checked ,true); D: $("sex:radio").eq(1).attr("checked",true);

They ______ at the hotel in less than half an hour after their arrival at the airport. A: checked out B: checked on C: checked up D: checked in