如何在javascript变量中添加php日期？

我试图通过在变量presentdate中使用php代码嵌入特定格式的日期，如下面的代码行所示

var dateFormatPHP = getDateFormat();
var formatToApplyPHP = "";

switch(dateFormatPHP)
{

    case "d-m-Y":
         formatToApplyPHP= "d/m/Y";
    break;

    case "m-d-Y":
        formatToApplyPHP= "m/d/Y";
    break;

    case "Y-m-d":
        formatToApplyPHP= "Y/m/d";
    break;

 }     


var presentdate = <?php echo date(formatToApplyPHP);?>

var dateFormatPHP=getDateFormat（）；
var formatoapplyphp=“”；
开关（dateFormatPHP）
{
案例“d-m-Y”：
formatToApplyPHP=“d/m/Y”；
打破
案例“m-d-Y”：
formatToApplyPHP=“m/d/Y”；
打破
案例“Y-m-d”：
formatToApplyPHP=“Y/m/d”；
打破
}     
var presentdate=

---

请帮忙

formatToApplyPHP是Javascript变量，请尝试使用PHP设置此变量，然后可以使用以下语句：

var dateFormatPHP = getDateFormat();
var formatToApplyPHP = "";

switch(dateFormatPHP)
{

    case "d-m-Y":
         formatToApplyPHP= "d/m/Y";
    break;

    case "m-d-Y":
        formatToApplyPHP= "m/d/Y";
    break;

    case "Y-m-d":
        formatToApplyPHP= "Y/m/d";
    break;

 }     


var presentdate = <?php echo date(formatToApplyPHP);?>

var presentdate = <?php echo date($formatToApplyPHP);?>

var presentdate=

到PHP的Javascript数据传输通常由

XmlhttpRequest

处理，因此创建PHP文件，例如.date.PHP！将该格式作为param发送到该文件并获取响应数据。比如这个例子

var dateFormatPHP = getDateFormat();
var formatToApplyPHP = "";

switch(dateFormatPHP)
{

    case "d-m-Y":
         formatToApplyPHP= "d/m/Y";
    break;

    case "m-d-Y":
        formatToApplyPHP= "m/d/Y";
    break;

    case "Y-m-d":
        formatToApplyPHP= "Y/m/d";
    break;

 }     


var presentdate = <?php echo date(formatToApplyPHP);?>

var dateFormatPHP = getDateFormat();
var formatToApplyPHP = "";

switch(dateFormatPHP)
{

    case "d-m-Y":
         formatToApplyPHP= "d/m/Y";
    break;

    case "m-d-Y":
        formatToApplyPHP= "m/d/Y";
    break;

    case "Y-m-d":
        formatToApplyPHP= "Y/m/d";
    break;

 }     

 $.get("date.php",{d:formatToApplyPHP},function(data) {
      console.log(data);
 });

date.php

---

formatoApplyPHP

是一个JS变量，您不能在PHP中使用它，因为它在服务器上运行。这里的逻辑需要完全转移到客户机或服务器上，不能以您正在尝试的方式将两者混合使用。