问在一段时间内显示图像和脚本

EN

$('#myLink').click(function() {
    // Start setInterval which runs a function every n seconds, and assign it to a variable
    var runningInterval = setInterval(function() {...}, 500);  

    $('#myImg').attr('src', 'newImg.jpg');

    // After 15 seconds, clear the runningInterval, and reset the image.
    setTimeout(function() { clearInterval(runningInterval); $('#myImg').attr('src', 'oldImg.jpg'); }, 15000);
});

  interval = 500;
  imgsrc = "webcam/image.jpg";

  // Is this function getting called?
  function Refresh() {
     tmp = new Date(); 
     tmp = "?" + tmp.getTime();

        // You could use jQuery here, just like below.
     document.images["image1"].src = imgsrc + tmp;
  }

  $('#myLink').click(function() {
      // Start setInterval which runs your Refresh function every 0.5 seconds, and assign it to a variable
      var runningInterval = setInterval(Refresh, interval);  

      // Display new image
      // This line may be unnecessary if the Refresh() function is loading it anyway.
      $('#myImg').attr('src', 'newImg.jpg');

      // After 15 seconds, clear the runningInterval, and reset the image.
      setTimeout(function() { clearInterval(runningInterval); $('#myImg').attr('src', 'oldImg.jpg'); }, 15000);

      return false;
  });

var original_url = '';
var second_url = 'http://example.com/path/to/image.jpg';
var delay_in_milliseconds = 15000

function resetImage() {
    $('#myImg').attr('src', original_url);
}

$(document).ready(function () {
    original_url = $('#myImg').attr('src');
    $('#myImg').attr('src', second_url);
    setTimeout(resetImage, delay_in_milliseconds)
});

<img id="myImg" src="another/path/to/another/image.jpg" />