jquery:取消绑定(bind)加载的函数

Question

我有一个函数，可以在加载页面时调整图像背景的大小，

$(document).ready(function(){
loadBackground();
});

并且我想在单击按钮时“卸载”或“删除”此已加载的函数，以便可以重新加载此函数，而不是将其加载到页面顶部，

$('.get-image').click(function(){
        $(window).unbind("resize",loadBackground);
        loadBackground();
 return false;
 });

但我无法让它工作!有什么想法吗？

谢谢，刘

Answer 1

根据您的评论，我认为您根本不需要解除绑定(bind):

您首先要在页面加载时加载背景，然后在单击发生时加载背景。

调整图像大小时背景会发生什么应该是绑定(bind)到 $(window).resize() 的另一个单独的函数...所以整个事情看起来像这样:

( $(function() { ... }); 与 $(document).ready(function() { ... }) 含义相同只是写得更快:

$(function() { 
      // Define load BG
    function loadBackground() {
        /// ...
    }

      // Define what happens to the BG image on resize
      // this doesn't have to change. It should refer
      // to the generic `background-image`
    $(window).resize(function() { 
        // ...
    });

      // load BG when page is ready:
    loadBackground();

      // load another BG if there's a click:
      // This will effectively cancel the previous load bg
    $('.get-image').click(function() { 
        loadBackground();
        return false;
    });    
});

// I'm assuming you're somehow changing which BG image is loaded
// something like loadBackground(image)... and you could initially 
// load a default image, and then, if there's a click, you could
// determine what image should be based on what was clicked.