本文实例讲述了javascript实现点击商品列表checkbox实时统计金额的方法。分享给大家供大家参考。具体实现方法如下：
<!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>商品列表统计金额</title> <style type="text/css"> body,div,p { margin:0; padding:0; font-size:14px; } #sumMoney { font-size:26px; font-weight:bold; color:Red; } </style> <script type="text/javascript"> //全选和全清 function checkAll() { var chkItems = document.getElementsByName("item"); for (var i = 0; i < chkItems.length; i++) { chkItems[i].checked = event.srcElement.checked; } calculateMoney(); } //统计所有选中的产品金额 function calculateMoney() { var sum = 0; var chkItems = document.getElementsByName("item"); for (var i = 0; i < chkItems.length; i++) { if (chkItems[i].checked) { sum += parseInt(chkItems[i].value); } } var sumMoneyObj = document.getElementById("sumMoney"); sumMoneyObj.innerHTML = "总金额:" + sum; } //给每个产品复选框加上自动统计功能 function iniEvent() { var chkItems = document.getElementsByName("item"); for (var i = 0; i < chkItems.length; i++) { chkItems[i].onclick = calculateMoney; } } </script> </head> <body> <div> <p><input type="checkbox" />全选</p> <p><input type="checkbox" value="2999" />¥2999 Haier/海尔 KFR-35GW/03GJC12-DS</p> <p><input type="checkbox" value="2256" />¥2256 天猫年货 AUX/奥克斯 KFR-35GW/SFA+2</p> <p><input type="checkbox" value="2799" />¥2799 Gree/格力 KFR-26G(26556)FNDe-3</p> <p><input type="checkbox" value="2008" />¥2008 AUX/奥克斯 KFR-25GW/SFA+2</p> <p><input type="checkbox" value="2598" />¥2598 Hisense/海信 KFR-35GW/EF11S3</p> <p><input type="checkbox" value="1877" />¥1877 TCL KFRd-25GW/DE22</p> <p><input type="checkbox" value="2398" />¥2398 Kelon/科龙 KFR-35GW/EFVCS3</p> <p><input type="checkbox" value="1999" />¥1999 TCL KFRd-35GW/FC23</p> <p><input type="checkbox" />全选</p> <p><span>总金额:</span></p> </div> </body> </html>
希望本文所述对大家的javascript程序设计有所帮助。
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