jQuery Uncaught TypeError with Theme Punch Revolution Slider [英] jQuery Uncaught TypeError with Theme Punch Revolution Slider

问题描述

我遇到了一个无法追查的问题。我正在使用函数。

我不会不推荐修复或修改你不拥有的代码，但是现在你可以通过在cssAnimationRemove函数上加上未定义的检查来修复bug：

Prettified ，原始函数如下所示：

  a.fn.cssAnimationRemove = function（）{
 var b = this ; 
 var c = b.data（cssAnimations）; 
 var d = b.data（identity）; 
 a.each（c，function（a，b）{
 c [a] = b.splice（d + 1,1）; 
}）; 
 b.data（cssAnimations，c）; 
}; 
  

修改后的美化版本只需要插入一个未定义的检查。它看起来像这样：

  a.fn.cssAnimationRemove = function（）{
 var b = this; 
 var c = b.data（cssAnimations）; 
 var d = b.data（identity）; 
 if（typeof c！==undefined）{
 a.each（c，function（a，b）{
c [a] = b.splice（d + 1,1） ）; 
}）; 
} 
 b.data（cssAnimations，c）; 
}; 
  

在购买包含此版本滑块的主题后，我们遇到了同样的问题（我怀疑是一个较旧的版本，因为Revolution Slider网站上的文件与我们本地的文件不同。

I'm having a problem that I can't track down. I'm using the Revolution Slider and I keep on getting jQuery errors:

 ▼ Uncaught TypeError: Cannot read property 'length' of undefined (repeated 86 times)

    p.extend.each                            jquery-1.8.2.min.js:2  
    a.fn.cssAnimationRemove     jquery.themepunch.plugins.min.js:18  
    (anonymous function)        jquery.themepunch.plugins.min.js:18  

The problem is on this page and I believe it's causing the weird problem where the picture doesn't fully disappear when the slides change. It leaves the picture there, and then it suddenly disappears. Like this:

It's given me nothing but trouble and I can't seem to track it down. Any suggestions?

解决方案

After prettifying jquery.themepunch.plugins.min.js and stepping through using Chrome's web inspector, I was able to track down the cause of the issue.

It is being used by a call to jquery's each function on an undefined object.

I wouldn't recommend fixing or altering code that you don't own, but for now you can fix the bug by just putting in an undefined check on the cssAnimationRemove function:

Prettified, the original function looks like this:

a.fn.cssAnimationRemove = function () {
    var b = this;
    var c = b.data("cssAnimations");
    var d = b.data("identity");
    a.each(c, function(a, b) {
        c[a] = b.splice(d + 1, 1);
    });
    b.data("cssAnimations", c);
};

The modified prettified version just needs an undefined check inserted. It will look something like this:

a.fn.cssAnimationRemove = function () {
    var b = this;
    var c = b.data("cssAnimations");
    var d = b.data("identity");
    if (typeof c !== "undefined") {
        a.each(c, function(a, b) {
            c[a] = b.splice(d + 1, 1);
        });
    }
    b.data("cssAnimations", c);
};

We came across the same issue after buying a theme that includes this version of the slider (which I suspect is an older version, as the files on the Revolution Slider website are not the same as the files we have locally).

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