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输入数量和价格自动计算输出金额的js代码

<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3Cscript%3E%20%0D%0Afunction%20checkInt(o)%7B%20%0D%0AtheV%3DisNaN(parseInt(o.value))%3F0%3AparseInt(o.value)%3B%20%0D%0Aif(theV!%3Do.value)%7Bo.value%3DtheV%3B%7D%20%0D%0AtxtTotal.value%3DtxtAmount.value*txtPrice.value%3B%20%0D%0A%7D%20%0D%0Afunction%20checkP(o)%7B%20%0D%0AtheV%3DisNaN(parseFloat(o.value))%3F0%3AparseFloat(o.value)%3B%20%0D%0AtheV%3DparseInt(theV*100)%2F100%3B%20%0D%0Aif(theV!%3Do.value)%7B%20%0D%0AtheV%3D(theV*100).toString()%3B%20%0D%0AtheV%3DtheV.substring(0%2CtheV.length-2)%2B%22.%22%2BtheV.substring(theV.length-2%2CtheV.length)%20%0D%0Ao.value%3DtheV%3B%20%0D%0A%7D%20%0D%0AtxtTotal.value%3DtxtAmount.value*txtPrice.value%3B%20%0D%0A%7D%20%0D%0A%3C%2Fscript%3E"> 
数量: 
<input id=txtAmount value=0 onkeyup="checkInt(this);" onpaste="checkInt(this);" oncut="checkInt(this);" ondrop="checkInt(this);" onchange="checkInt(this);"> 
单价: 
<input id=txtPrice value=0 onkeyup="checkP(this);" onpaste="checkP(this);" oncut="checkP(this);" ondrop="checkP(this);" onchange="checkP(this);" style="border-right-width:0px;margin-right:0px;"> 
<input style="border-left-width:0px;margin-left:-4px;width:18px" value="￥" readonly> 
总价: 
<input id=txtTotal value=0 style="border-right-width:0px;margin-right:0px;" readonly> 
<input style="border-left-width:0px;margin-left:-4px;width:18px" value="￥" readonly>

　　 [Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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