Jquery，用计时器改变背景图像

Question

我有两个用于该网站的背景图像，我希望它们每 5 秒自动更改一次。有人可以看看我的 jQuery 代码并告诉我我做错了什么吗？

$(function() {
    var body = $(‘body’);
    var backgrounds = new Array(
        ‘url(images/hso-palmtree-background.jpg)’,
        ‘url(images/hso-boardwalk-background.jpg)’
    );

    var current = 0;

    function nextBackground() {
        body.css(
           ‘background’,
            backgrounds[current = ++current % backgrounds.length]
        );

        setTimeout(nextBackground, 5000);
    }

    setTimeout(nextBackground, 5000);
    body.css(‘background’, backgrounds[0]);
});

Answer 1

您的代码是正确的，您只需更改反引号即可。将 ‘ 更改为 '。

这是经过清理的修订版:http://jsfiddle.net/X2NqX/

$(function () {
    var body = $('body');
    var backgrounds = [
      'url(http://static.jsbin.com/images/jsbin_static.png)', 
      'url(http://static.jsbin.com/images/popout.png)'];
    var current = 0;

    function nextBackground() {
        body.css(
            'background',
        backgrounds[current = ++current % backgrounds.length]);

        setTimeout(nextBackground, 5000);
    }
    setTimeout(nextBackground, 5000);
    body.css('background', backgrounds[0]);
});