Question

您好我正在尝试获取用户在表单中输入特定日期的具体日期，但输出不符合预期。我已经尝试了一些代码而不是工作，你能否通过查看这段代码告诉我有什么问题：

<code>
<!DOCTYPE html>
<html>
<head>
    <title> The day of your birthday</title>
</head>
<body>

<form>
<p> day :</p>
<input type="text" id="day"/>
<p> month :</p>
<input type="text" id="month"/>
<p> year :</p>
<input type="text" id="year"/><br/>


<input type="button" value="Check "onclick="dayBirthDay()"/>
<input type="reset" value="reset">
</form>
<p id="ok"></p>
<script type="text/javascript">

function dayBirthDay(){
    var t = new Date();
    var day = document.getElementById('day').value;
    var month = document.getElementById('month').value;
    var year = document.getElementById('year').value
    t.setDate(day);
    t.setMonth(month);
    t.setYear(year);
 // how to fix this?? i've try using monthDay. but both is don't seem logic
    var weekDay = ["Sunday", "Monday", "Tuesday","Wednesday","Thursday",     "Friday", "Saturday"]
    document.getElementById('ok').innerHTML = "you were born at " +    weekDay[t.getDay()];
}
    console.log(Date());


    </script>
    </body>
    </html>
</code>

Answer 1

我唯一能看错的是JS Date（）中的月份是0，所以减去你给定的月份1：

t.setMonth(month-1);

Answer 2

您的代码确实有效：

＆＃13;

function dayBirthDay(){
    var t = new Date();
    var day = document.getElementById('day').value;
    var month = document.getElementById('month').value;
    var year = document.getElementById('year').value
    t.setDate(day);
    t.setMonth(month);
    t.setYear(year);
 
    var weekDay = ["Sunday", "Monday", "Tuesday","Wednesday","Thursday",     "Friday", "Saturday"]
    document.getElementById('ok').innerHTML = "you were born at " +    weekDay[t.getDay()];
}

＆＃13;

<p> day :</p> <input type="text" id="day"/>
<p> month :</p> <input type="text" id="month"/>
<p> year :</p> <input type="text" id="year"/><br/>

<input type="button" value="Check "onclick="dayBirthDay()"/>

<p id="ok"></p>

＆＃13;

我猜，由于setMonth问题，您收到了错误的结果。

请注意setMonth从0到11 取整数。因此，1月将是0，12月将是11。

Answer 3

试试这段代码

＆＃13;

function dayBirthDay(){
    var t = new Date();
    var day = document.getElementById('day').value;
    var month = document.getElementById('month').value;
    var year = document.getElementById('year').value
    t.setDate(day);
    t.setMonth(month);
    t.setYear(year);
 
    var weekDay = ["Sunday", "Monday", "Tuesday","Wednesday","Thursday",     "Friday", "Saturday"]
    document.getElementById('ok').innerHTML = "you were born at " +    weekDay[t.getDay()];
}

＆＃13;

<p> day :</p> <input type="text" id="day"/>
<p> month :</p> <input type="text" id="month"/>
<p> year :</p> <input type="text" id="year"/><br/>

<input type="button" value="Check "onclick="dayBirthDay()"/>

<p id="ok"></p>

＆＃13;

如何用javascript获取特定日期

3 个答案: