输入数量和价格自动计算输出金额的js代码

function checkInt(o){
theV=isNaN(parseInt(o.value))?0:parseInt(o.value);
if(theV!=o.value){o.value=theV;}
txtTotal.value=txtAmount.value*txtPrice.value;
}
function checkP(o){
theV=isNaN(parseFloat(o.value))?0:parseFloat(o.value);
theV=parseInt(theV*100)/100;
if(theV!=o.value){
theV=(theV*100).toString();
theV=theV.substring(0,theV.length-2)+"."+theV.substring(theV.length-2,theV.length)
o.value=theV;
}
txtTotal.value=txtAmount.value*txtPrice.value;
}

数量:

单价:


总价:

[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]