js选中checkbox赋值给文本框

//js

$(function(){
var name="";
var kmname=[];
var n=
$("input[type=checkbox]").click(function(){
kmname.length=0;
$("input[name="inputcheck"]:checked").each(function(){
kmname.push($(this).val());
})
name=kmname.join(',');
$("#TextBox1").val(name);
})

})

//html

<input type="checkbox" id="yuwen" name="inputcheck" value="语文"/>语文
<input type="checkbox" id="shuxue" name="inputcheck" value="数学"/>数学<br />
<input type="checkbox" id="yingyu" name="inputcheck" value="英语" />英语<input type="checkbox" id="huaxue" name="inputcheck"
value="化学" />化学<br />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>