我已经组合了一个计算器根据用户输入计算价格。它可以很好地处理一个输入,但现在我必须使用第二个用户输入来扩展它。但是这里有一个问题:用户可能不想把任何东西放到现场,所以它将是空的。这就是刹车我的代码。我可以复制计算器函数,并返回值并将这两个值一起添加到第三个函数中,但当存在空值时它将不起作用。添加两个javascript函数(取决于输入)
只是为了它的缘故,一些琐碎的HTML代码:
//When I only calculate with this user input, its easy
<input type="text" id="rocktext"><br>
// But how to consider this and do the same exact calculations like with the
//first one and add those two result together?
<input type="text" id="rocktext2"><br>
到底的代码应该是这样的:
以第一用户输入,计算价格(如在代码如下)
如果(!!)有第二个用户输入,计算出价格并将它加到 第一个
我是一个白痴尝试与JS或只是一个白痴在第一个?
希望听到你,伙计们!
J.
初始JS代码如下:
function priceCalc() {
var inputs = document.getElementById("rocktext").value;
var length = inputs.length;
var accept = 6;
var initPrice = 8;
if (inputs<=accept){
// Since the code is much simpler right now i just put the result in HTML as follows:
document.getElementById("rockpricetotal").innerHTML = initPrice + " dollars";
//I can also return the the value calculated here like so:
//retVal = initPrice;
}
else {
var intLength = parseInt(length, 10);
var lengthGap = intLength - accept;
var totals = lengthGap * 0.8 + initPrice;
var prec = totals.toPrecision(3);
// Since the code is much simpler right now i just put the result in HTML as follows:
document.getElementById("rockpricetotal").innerHTML = prec + " dollars";
// Here also the return clause can be possible with the calculation result like so:
//retVal = prec;
}
// And the final return as an alternative to the innerHTML :
// return retVal;
}
如果你使用''两个'输入'并给他们一个初始值为0.00('value ='0'')? –