Jquery实时计算

hancheng 2012-04-24 07:46:24

想搞个程序，在页面上选择某几项后自动在当前页面计算出价格。
有下面一段程序。它是提交才显示数值的，我是想直接自动在页面下面自动显示，我还想有一个下接选择的。
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<script language="javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
</HEAD>
<BODY>
<form name="form1" id="form1" action ="" method="post" >
<h1> First type questions</h1>
<p > Question1 :
<input id="Question1_1_1" name="Question1_1" type="radio" value="0"/>aa
<input id="Question1_1_2" name="Question1_1" type="radio" value="1"/>bb
<input id="Question1_1_3" name="Question1_1" type="radio" value="2"/>cc
<p > Question2 :
<input id="Question1_2_1" name="Question1_2" type="radio" value="0"/>aa
<input id="Question1_2_2" name="Question1_2" type="radio" value="1"/>bb
<input id="Question1_2_3" name="Question1_2" type="radio" value="2"/>cc
<p > Question3 :
<input id="Question1_3_1" name="Question1_3" type="radio" value="0"/>aa
<input id="Question1_3_2" name="Question1_3" type="radio" value="1"/>bb
<input id="Question1_3_3" name="Question1_3" type="radio" value="2"/>cc
<p>
<input value="submit" type="submit" name="submit" />
</form>
<script language="javascript">
$(function(){
$('#form1').submit(function(){
var i=0;
$(':radio[name!=Question1_]:checked').each(function(){
i+=$(this).val()*1;
})
alert(i);return false;
});
});
</script>
</BODY>
</HTML>

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乌镇程序员 2012-04-25

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举个例子，供参考：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>无标题文档</title>

<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.7.2.min.js"></script>



<script type="text/javascript">

function calc() {

	var q1 = parseInt($("input[name='Question1_1']:checked").val());

	var q2 = parseInt($("input[name='Question1_2']:checked").val());

	var q3 = parseInt($("input[name='Question1_3']:checked").val());

	var q4 = parseInt($("#Question2").val());

		

	$("#demo").html('当前选中结果：' + (q1 + q2 + q3 + q4));

}

$(document).ready( function() {

	$(":radio").bind('change', calc);

	$("select").bind('change', calc);

});

</script>

</head>



<body>

<form name="form1" id="form1" action ="" method="post">

  <h1> First type questions</h1>

  <p> Question1 :

    <input id="Question1_1_1" name="Question1_1" type="radio" value="0" checked="checked" />aa

    <input id="Question1_1_2" name="Question1_1" type="radio" value="1" />bb

    <input id="Question1_1_3" name="Question1_1" type="radio" value="2" />cc

  </p>

  <p> Question2 :

    <input id="Question1_2_1" name="Question1_2" type="radio" value="0" checked="checked" />aa

    <input id="Question1_2_2" name="Question1_2" type="radio" value="1" />bb

    <input id="Question1_2_3" name="Question1_2" type="radio" value="2" />cc

  </p>

  <p> Question3 :

    <input id="Question1_3_1" name="Question1_3" type="radio" value="0" checked="checked" />aa

    <input id="Question1_3_2" name="Question1_3" type="radio" value="1" />bb

    <input id="Question1_3_3" name="Question1_3" type="radio" value="2" />cc

  <p>

  	<select id="Question2" name="Question2">

    	<option value="0">aa</option>

        <option value="1">bb</option>

        <option value="2">cc</option>

    </select>

  </p>

  

  <div id="demo"></div>

  <p>

    <input value="submit" type="submit" name="submit" />

  </p>

</form>

</body>

</html>