Question

如何用JS实现选中单选按钮?如下列:

//单击提交按钮使其未选中单选按钮选中
<script type="text/javascript">
function photo(){
//我这样写好像不对,请指正
document.getElementById("photo1").checked==true;
}
</script>

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<input type="radio" id = "photo1" name = "photo" value="" />

<input type="submit" id="btnL" name="btn" onclick="photo();" value="提交" />

Answer 1

<script type="text/javascript">
function cphoto(){
document.getElementById("photo1").checked=true;
}
</script>

---------------------------------------------------------------------
<input type="radio" id = "photo1" name = "photo" value="" />
<input type="button" id="btnL" name="btn" onclick="cphoto();" value="提交" />