本文實例講述了javascript實現點擊商品列表checkbox實時統計金額的方法。分享給大家供大家參考。具體實現方法如下：
<!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>商品列表統計金額</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">//全選和全清function checkAll() { var chkItems = document.getElementsByName("item"); for (var i = 0; i < chkItems.length; i++) { chkItems[i].checked = event.srcElement.checked; } calculateMoney();}//統計所有選中的產品金額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 = "總金額:" + sum;}//給每個產品復選框加上自動統計功能function iniEvent() { var chkItems = document.getElementsByName("item"); for (var i = 0; i < chkItems.length; i++) { chkItems[i].onclick = calculateMoney; } }</script></head><body onload="iniEvent()"><div id="divMain"><p><input type="checkbox" name="全選" onclick="checkAll()" />全選</p><p><input type="checkbox" name="item" value="2999" />¥2999 Haier/海爾 KFR-35GW/03GJC12-DS</p><p><input type="checkbox" name="item" value="2256" />¥2256 天貓年貨 AUX/奧克斯 KFR-35GW/SFA+2</p><p><input type="checkbox" name="item" value="2799" />¥2799 Gree/格力 KFR-26G(26556)FNDe-3</p><p><input type="checkbox" name="item" value="2008" />¥2008 AUX/奧克斯 KFR-25GW/SFA+2</p><p><input type="checkbox" name="item" value="2598" />¥2598 Hisense/海信 KFR-35GW/EF11S3</p><p><input type="checkbox" name="item" value="1877" />¥1877 TCL KFRd-25GW/DE22</p><p><input type="checkbox" name="item" value="2398" />¥2398 Kelon/科龍 KFR-35GW/EFVCS3</p><p><input type="checkbox" name="item" value="1999" />¥1999 TCL KFRd-35GW/FC23</p><p><input type="checkbox" name="全選" onclick="checkAll()" />全選</p><p><span id="sumMoney">總金額:</span></p></div></body></html>希望本文所述對大家的javascript程序設計有所幫助。
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