javascript 操作表格实现批发功能

最新推荐文章于 2025-12-05 08:37:05 发布

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本文介绍了一个用于计算批量购买商品时的价格脚本。该脚本能够根据用户输入的商品数量，从预设的价格表中查找对应的价格区间，并计算出总价，同时考虑了最大购买限制和库存数量等因素。

<script type="text/javascript">
	function calc()
	{
	//var unitprice = document.getElementById("prices").value;
	var stocks = document.getElementById("stock").value;
	if(isNaN(stocks))
	{
	document.getElementById("stock").value = "";
	alert("Quantity entered must be a number!");
	}
	else
	{

	lots = document.getElementById("lot").value;
	if(parseInt(stocks)>parseInt(lots))
	{
	document.getElementById("stock").value = lots;
	stocks = lots;
	}
	document.getElementById("nums").innerHTML = stocks;
	}
	var whelestab = document.getElementById("wholeslist");
	var maxlot = getprice(whelestab.rows[whelestab.rows.length-1].cells[0].innerHTML);
	if(parseInt(maxlot[1]) < parseInt(stocks))
	{
	stocks = maxlot[1];
	document.getElementById("nums").innerHTML = maxlot[1];
	document.getElementById("stock").value = maxlot[1];
	}
	for(i=1;i<whelestab.rows.length;i++)
	{
	var quan = getprice(whelestab.rows[i].cells[0].innerHTML);
	if(parseInt(quan[0]) <= parseInt(stocks) && parseInt(stocks) <= parseInt(quan[1]))
	{
	//alert(whelestab.rows[i].cells[1].innerHTML);
	document.getElementById("unitpric").innerHTML = whelestab.rows[i].cells[1].innerHTML;
	document.getElementById("prices").value = parseFloat(document.getElementById("unitpric").innerHTML.replace("USD ",""));
	break;
	}
	}
	document.getElementById("total").innerHTML = ((parseFloat(document.getElementById("unitpric").innerHTML.replace("USD ","")) * stocks)-parseFloat(document.getElementById("shipping").value)).toFixed(2);
	document.getElementById("productpric").innerHTML = (parseFloat(document.getElementById("unitpric").innerHTML.replace("USD ","")) * stocks).toFixed(2);
	}

	function getprice(prices)
	{
	var prices = prices.replace(" --- "," ");
	var pric = prices.split(" ");
	return pric;
	}

	</script>