Question

我有这段代码片段，当我的$remainingTime变为零时，我希望它在回调中运行停止功能。我不知道在else语句中我要写什么。

var clock = $('.clock').FlipClock(
  <?php
  $now = new DateTime('now');
  $tm = new DateTime('2017-12-22 12:00:00');
  $remainingTime = $tm->getTimestamp()-$now->getTimestamp();
  if($remainingTime>0) {
    echo $remainingTime;
  } else {
  }
  ?>
  ,{
    clockFace: 'DailyCounter',
    countdown: true,
  callbacks: {
    stop: function() {
      $(".timerContainer").css('display','none');
    }
  }
});

Answer 1

您只需使用setInterval并计算，直至到达您的时间：例如，一段运行10秒的代码片段：

    var i = 10;
    var end = 15;
    var statusDiv = document.getElementById("status");
    
    var t = setInterval(function(){ 
      if(i++ >= end) {
        clearInterval(t);
        stop();
       }
       statusDiv.innerHTML = i;
    }, 1000);
    
    
    function stop(){
      alert("stopped, Now 'i' equals " + i);
    }

<div id="status"></div>

我不确定FlipClock正在做什么，但它似乎就像一个计数器，但这里是如何做与你在PHP中所做的相同，这是不需要的，如果你想得到日期和在JavaScript中进行日期减法，请查看以下代码段：

var d1 = new Date(); //"now"
var d2 = new Date("December 23, 2017 01:13:00")  // some date
//var d2= new Date(2017,12,23,1,13,0);//same as d2 above
var remainingTime = Math.abs(d1-d2);  // get the diff in milliseconds

Answer 2

在插件代码之后进行检查。

var clock = $('.clock').FlipClock(
  <?php
  $now = new DateTime('now');
  $tm = new DateTime('2017-12-22 12:00:00');
  $remainingTime = $tm->getTimestamp()-$now->getTimestamp();
  if($remainingTime>0) {
    echo $remainingTime;
  } else {
  }
  ?>
  ,{
    clockFace: 'DailyCounter',
    countdown: true,
  callbacks: {
    stop: function() {
      $(".timerContainer").css('display','none');
    }
  }
});
<?php if ($remainingTime == 0) {
    ?>
    $(".timerContainer").hide();
<?php }

Answer 3

我不会那样混合JS和PHP。你可以这样做：

from tkinter import *

def newwindow():
    newwindow = Tk()
    newwindow.title('Sign Up')
    newwindow.geometry('200x400')

    def sign_done():
        david = a.get()
        javed = b.get()
        lbee = Label(newwindow, text=david).pack()
        baeee = Label(newwindow, text=javed).pack()

    a = StringVar()
    b = StringVar()
    user = Entry(newwindow, textvariable=a).pack()
    pword = Entry(newwindow, textvariable=b).pack()

    done = Button(newwindow, text='done now', command=sign_done).pack()

    newwindow.mainloop()

root = Tk()
root.title('Gulmeena')
root.geometry("500x200")
button = Button(root, text='Go', command=newwindow).pack()

root.mainloop()

在if else语句中运行Javascript中的回调

3 个答案: