var input=document.getElementsByTagName('input'');
var d=0;
for(var i=0,len=input.length;i<len;i++){
if(input[i].className=='Small_Taste'){
d+=input[i].value
}
}
试试
var d=0;
for(var i=0,len=input.length;i<len;i++){
if(input[i].className=='Small_Taste'){
d+=input[i].value
}
}
试试
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript" src='http://code.jquery.com/jquery-1.11.0-beta1.js'></script>
</head>
<body>
<div class="shop_opation">
<ul>
<li class="clr">
<div class="radio"><i class="chenked"></i></div>
<div class="styler clr" id="Taste_parent">
<div class="Product clr">
<div class="pic_car">
<img src="images/qk.jpg" alt="">
</div>
<div class="Re">
<h1>林涛手剥松子1 175元/500克/包</h1>
<div class="Price">单价:<span>￥<span class="total">175.00</span>元</span></div>
</div>
</div>
<div class="Product Small">
<div class="pic_car">
<img src="images/qk.jpg" alt="">
</div>
<div class="Re">
<h1>麻辣味</h1>
<div class="number"> 数量：<input type="text" value="2" class="Small_Taste"></div>
</div>
</div>
<div class="Product Small">
<div class="pic_car">
<img src="images/qk.jpg" alt="">
</div>
<div class="Re">
<h1>麻辣味2</h1>
<div class="number"> 数量：<input type="text" value="2" class="Small_Taste"></div>
</div>
</div>
<div class="Product Small">
<div class="pic_car">
<img src="images/qk.jpg" alt="">
</div>
<div class="Re">
<h1>麻辣味3</h1>
<div class="number"> 数量：<input type="text" value="2" class="Small_Taste"></div>
</div>
</div>
</div>
<div class="Small_Result">
<div class="qb_tar">
<i></i>
数量：<input type="text" value="2" id="count">
共计：<span>￥<span class="总和">175</span></span>元
</div>
</div>
</li>
</ul>
</div> <script>
window.onload = function(){
var count = 0;
$("#Taste_parent .Small_Taste").each(function(){
count += parseInt($(this).val());
})
$("#count").val(count);
}
</script>
</body>
</html>