Question

我正在尝试在javascript中转换日期格式。我从表单中获取一个字符串，然后尝试将其转换为日期对象，然后更改格式。如何修复下面的代码，以便日期时间通常如下所示：3/31/2012 00:00 得到转换，看起来像这样：2012-03-31 00:00？

以下是我的代码：

function load(form) {

if (form != null){
var startdt = getDateFromFormat(form.datetime1.value,"MM/dd/yyyy hh:mm");
var enddt = getDateFromFormat(form.datetime2.value,"MM/dd/yyyy hh:mm");

startdt2 = dateFormat(startdt, "yyyy-MM-dd hh:mm");
enddt2 = dateFormat(enddt, "yyyy-MM-dd hh:mm");

//can be used for debugging but stops script
//var now = Date();
//now.format(MM/dd/yyyy hh:mm);
//want new format(yyyy-MM-dd hh:mm)

alert("Values are: " + startdt2 + " " + enddt2);

}
//rest of function

}

编辑：以上代码没有输出，但当我将其更改为：

function load(form) {

if (form != null){
var startdt = form.datetime1.value;
var enddt = form.datetime2.value
//can be used for debugging but stops script
//var now = Date();
//now.format(MM/dd/yyyy hh:mm);
//want new format(yyyy-MM-dd hh:mm)
alert("Values are: " + startdt + " and " + enddt);

}
//rest of function edited out
}

然后警报输出是：值为：3/31/2012 00:00和3/31/2012 23:59

Answer 1

我认为错误是您没有关闭您的功能，现在检查此代码并更改您的功能名称

function change_name(form) {
    if (form != null){
    var startdt = getDateFromFormat(form.datetime1.value,"MM/dd/yyyy hh:mm");
    var enddt = getDateFromFormat(form.datetime2.value,"MM/dd/yyyy hh:mm");

    startdt2 = dateFormat(startdt, "yyyy-MM-dd hh:mm");
    enddt2 = dateFormat(enddt, "yyyy-MM-dd hh:mm");

    //can be used for debugging but stops script
    //var now = Date();
    //now.format(MM/dd/yyyy hh:mm);
    //want new format(yyyy-MM-dd hh:mm)
    alert("Values are: " + startdt2 + " " + enddt2);
    }
}

Answer 2

function load(form) {

    if (form != null){
        var startdt = new Date(form.datetime1.value);
        var enddt = new Date(form.datetime2.value);
        var startformat = startdt.getFullYear() + "-" + (startdt.getMonth()+1) + "-" + startdt.getDate() + " " + startdt.getHours() +":" + startdt.getMinutes();
        var endformat = enddt.getFullYear() + "-" + (enddt.getMonth()+1) + "-" + enddt.getDate() + " " + enddt.getHours() +":" + enddt.getMinutes();

        alert("Values are: " + startformat + " " + endformat);
    }
     //rest of function edited out for brevity

  }

这让我得到了我想要的东西。

我的javascript中的错误在哪里？转换日期格式

2 个答案: