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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
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<html xmlns="http://www.w3.org/1999/xhtml"> |
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<head> |
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<title>jQuery实现购物车多物品数量的加减+总价计算</title> |
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<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></script> |
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<script> |
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$(function(){ |
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$(".add").click(function(){ |
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var t=$(this).parent().find('input[class*=text_box]'); |
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t.val(parseInt(t.val())+1) |
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setTotal(); |
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}) |
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$(".min").click(function(){ |
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var t=$(this).parent().find('input[class*=text_box]'); |
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t.val(parseInt(t.val())-1) |
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if(parseInt(t.val())<0){ |
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t.val(0); |
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} |
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setTotal(); |
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}) |
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function setTotal(){ |
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var s=0; |
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$("#tab td").each(function(){ |
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s+=parseInt($(this).find('input[class*=text_box]').val())*parseFloat($(this).find('span[class*=price]').text()); |
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}); |
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$("#total").html(s.toFixed(2)); |
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} |
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setTotal(); |
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|
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}) |
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</script> |
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</head> |
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<body> |
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<table id="tab"> |
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<tr> |
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<td> |
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<span>单价:</span><span class="price">1.50</span> |
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<input class="min" name="" type="button" value="-" /> |
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<input class="text_box" name="" type="text" value="1" /> |
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<input class="add" name="" type="button" value="+" /> |
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</td> |
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</tr> |
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<tr> |
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<td> |
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<span>单价:</span><span class="price">3.95</span> |
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<input class="min" name="" type="button" value="-" /> |
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<input class="text_box" name="" type="text" value="1" /> |
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<input class="add" name="" type="button" value="+" /> |
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</td> |
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</tr> |
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</table> |
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|
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<p>总价:<label id="total"></label></p> |
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</body> |
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</html> |