未定义Ad Rotator脚本函数

Question

我有一个脚本，允许我添加一系列的图像和链接，本质上是一个广告旋转器。运行后，它设置一个超时，以便定期调用脚本的旋转opart，以更改图像和链接。

$(document).on("pageshow", function () {-
alert("LOADED BANNER CODE");
//Global variable that stores advertising banners.
var ads = new Array();

//Function that starts when the page finished loading.

  //Adds information about the new banners.
  ads.push(["http://www.dpbolvw.net/click-7490208-11465196", "http://www.lduhtrp.net/image-7490208-11465196", ""]);
  ads.push(["http://www.anrdoezrs.net/click-7490208-11646171", "http://www.ftjcfx.com/image-7490208-11646171", ""]);
  /*
  ads.push(["", "", ""]);
  ads.push(["", "", ""]);
  ads.push(["", "", ""]);
  ads.push(["", "", ""]);
  ads.push(["", "", ""]);
  ads.push(["", "", ""]);
  ads.push(["", "", ""]);
  */
  //ads.push(["http://w3schools.com/svg/default.asp", "http://adn.impactradius.com/display-ad/378-10418", "SVG"]);

  //Starting rotation with the first banner.
  ad_rotate(0);

function ad_rotate(active){   
  alert("LOADED BANNER ADROTATE CODE");
  //Gets the div that will display banners.
  var ad_element = document.getElementById("ad");

  //Prints a new link with image in advertising box.
  ad_element.innerHTML = "<a href=\""+ads[active][0]+"\"><img src=\""+ads[active][1]+"\" alt=\""+ads[active][2]+"\" title=\""+ads[active][2]+"\" /></a>";

  //Switches to the next banner.
  active++;

  //If the counter has reached the end, it shall start again from zero.
  if(active >= ads.length){
    active = 0;
  }

  //Run the function in 5000 milliseconds (5 seconds).
  setTimeout("ad_rotate("+active+")", 5000);
};
});

这在第一次运行时很好，但是随后对'ad_rotate‘函数的调用会导致错误。萤火虫给：

ReferenceError: ad_rotate is not defined
setTimeout("ad_rotate("+active+")", 5000);

我有什么办法纠正这件事吗？

Answer 1

这样做：

setTimeout(function () {
    ad_rotate(active);
}, 5000);

不能在现在的settimeout函数中传递参数。您需要在它周围包装一个匿名函数。

Answer 2

这应能解决以下问题：

setTimeout(ad_rotate(active), 5000);