Question

我想根据格式“HH：MM AM”制作随机时间的javascript 在我的selenium IDE中。

我尝试了以下代码： javascript {Math.floor（24 * Math.random（）+ 00）+“：”+“00 PM”;}

但正如你猜测的那样，它不起作用。请帮助谢谢。

Answer 1

Shehryar的答案将为您提供不正确随机的结果，主要是因为它应该乘以12而不是当前的小时数，而不是当前的分钟数。即较少的小时数和分钟数将减少。由于使用圆形而不是地板，也可以获得零小时和60分钟。

HTML和文档对象的使用虽然很好，所以我将复制它：

<div id="timebox"></div>
<script>
function pad(number) { 
  //Add a leading 0 if the number is less than 10
  return ((number<10)?"0":"")+number.toString();
}

function randomTime() {
  //Generate random minute in the day (1440 minutes in 24h)
  var r = Math.floor(Math.random() * 1440);

  //The hour is obtained by dividing by the number of minutes in an hour
  //taking the floor of that (drop the decimal fraction)
  //take the remainder (modulo) of dividing by 12 (13 -> 1 etc)
  //add 1 so that the range is 1-12 rather than 0-11
  var HH = pad(1 + (Math.floor(r/60) % 12));

  //Take the integer remainder of dividing by 60 (remove the hours) 
  var MM = pad(r % 60);

  //The afternoon starts after 12*60 minutes
  var AMPM = (r>=720) ? "PM" : "AM";

  return HH + ":" + MM + " " + AMPM;
}

document.getElementById("timebox").innerHTML=randomTime();
</script>

Answer 2

你有没有看过这篇文章： How to format a JavaScript date 这个在Date对象本身上： https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date 也许这些链接将为您提供一些解决方案的指导。祝你好运！

编辑：我试过这个jsFiddle来帮助你，请看：http://jsfiddle.net/damf9hf1/3/

HTML：

<div id="timebox"></div>

JS：

var myDate = new Date();
var myHour = myDate.getUTCHours();
var myMinutes = myDate.getMinutes();

myRandom(myHour, myMinutes);

function myRandom(hrs, mins) {
    hrs = Math.round(Math.random()*hrs);
    mins = Math.round(Math.random()*mins);    
    var hFormat = (hrs<10 ? "0" : "");
    var mFormat = (mins<10 ? "0" : "");
    var amPm = (hrs<12 ? "AM" : "PM");
    document.getElementById("timebox").innerHTML="Time: " +hFormat+hrs+ ":" +mFormat+mins+ " " +amPm;
}
}

如何在javascript中随机抽取时间

2 个答案: