Question

有人可以帮我写一个JavaScript函数，说明如果选择的日期是从当前日期开始超过30天，那么我的费用计算器加20美元吗？任何帮助将不胜感激我非常新，不知道从哪里开始我找不到任何相似的例子..

这是文本框/日历：

<cfinput
       type="datefield"
       name="purchasedate"
       width="130"
       required="yes"
       message="Please enter purchase date."
       value="#dateformat(now(),"mm/dd/yyyy")#" 
       >

单选按钮决定价格：

var title_prices = new Array();
 title_prices["MCO"]=78.25;
 title_prices["FL Title"]=78.25;
 title_prices["OOS Title"]=88.25;

function getProofOfOwnership()
{  
    var proofOfOwnership=0;
    var theForm = document.forms["form"];
    var ownerShip = theForm.elements["ownership"];
    for(var i = 0; i < ownerShip.length; i++)
    {
        if(ownerShip[i].checked)
        {
         proofOfOwnership = title_prices[ownerShip[i].value];
        }
    }    return proofOfOwnership;
}

这会调用所有功能并将费用加在一起：

function calculateTotal()
{
    var titleFees = getProofOfOwnership() + (Function checking date);
    var divobj = document.getElementById('totalPrice');
    divobj.style.display='block';
    divobj.innerHTML = "Estimated Transfer Fees $"+titleFees;

}

Answer 1

此函数采用日期参数，如果日期超过30天，则返回20;如果日期在30天内或将来，则返回0。

function getDatePrice(date) {
    if (Object.prototype.toString.call(date) !== '[object Date]') {
        //If passed date is undefined or not valid, use today's date
        date = new Date();
    }

    var today = new Date();

    var diffMilli = today - date; 
    //Difference in milliseconds, need to convert to days
    var diffDays = diffMilli * 1000 * 60 * 60 * 24;

    if (diffDays > 30) {
        return 20;
    }
    else {
        return 0;
    }
}

行动起来：http://jsfiddle.net/rgjfwdpx/

编辑：要绑定代码，您需要从<cinput>标记中检索值。我不熟悉它们，但这是我对如何做到这一点的快速猜测。这可能不对。基本上你需要从输入中获取文本值，然后将其解析为新的日期。

function calculateTotal()
{
    //Get date from form. I've never worked with <cinput>, so this is just my guess
    var theForm = document.forms["form"];
    var purchasedate = theForm.elements["purchasedate"];
    var date = new Date(purchasedate.value);

    var titleFees = getProofOfOwnership() + getDatePrice(date);
    var divobj = document.getElementById('totalPrice');
    divobj.style.display='block';
    divobj.innerHTML = "Estimated Transfer Fees $"+titleFees;

}

基于日期的功能以及计算费用

1 个答案: