JavaScript 未在 HtmlUnit 中正确执行 [英] JavaScript not being properly executed in HtmlUnit

问题描述

我目前正在使用 HtmlUnit 开发一些测试.它正在加载一个包含 Braintree.js(他们的表单加密库)的页面.我有一堆正在运行，但我被困在它称为加密的地方.有问题的JS是:

I'm currently developing some tests with HtmlUnit. It's loading a page that contains braintree.js (their form encryption library). I have a bunch running, but I'm stuck where it calls crypto. The JS in question is:

  (function() {
        try {
            var ab = new Uint32Array(32);
            crypto.getRandomValues(ab);
            sjcl.random.addEntropy(ab, 1024, "crypto.getRandomValues");
        } catch (e) {}
    })();

HtmlUnit 正在抛出:

HtmlUnit is throwing:

EcmaError, ReferenceError, "'crypto' is not defined."

我想 HtmlUnit 不包括加密.是否可以自己包含一个加密库?

I suppose HtmlUnit doesn't include crypto. Would it be possible to include a crypto library myself?

推荐答案

根据您的评论，我不得不告诉您，HtmlUnit 在涉及到 JavaScript 时是一个令人头疼的问题.它会抱怨很多没有定义的变量和未知的函数等等.

Based on your comment, I have to tell you that HtmlUnit is a pain in the neck when it comes to JavaScript. It will complain a lot about variables not being defined and unknown functions and so on.

真正的浏览器更灵活，例如:它们接受语法不正确的 JavaScript 片段.HtmlUnit 期望一切都是完美的，没有任何错误.此外，即使您没有错过分号，HtmlUnit 也可能会抱怨.

Real browsers are more flexible, eg: they accept syntactically incorrect pieces of JavaScript. HtmlUnit expects everything to be perfect without any kind of error. Furthermore, even if you didn't miss a semicolon, HtmlUnit might complain.

我的建议:

• 确保您的 JavaScript 语法正确
• 避免使用复杂库的用户(jQuery 似乎得到了适当的支持)
• 如果您可以使用非最小化版本的库，那么值得一试
• 尽量避免使用复杂的 jQuery 方法(例如:向元素动态添加事件)
• 还有最重要的一点:尝试在不同的 BrowserVersions 之间切换.事实证明，Internet Explorer(具有讽刺意味的是)在解释 JavaScript 时提供了最佳结果

• Make sure your JavaScript is syntactically correct
• Avoid the user of complex libraries (jQuery seems to be properly supported)
• If you can use non-minimized versions of libraries it's worth giving it a try
• Try to avoid complex jQuery methods (eg: adding events dynamically to elements)
• And the most important one: Try switching between different BrowserVersions. Internet Explorer (ironically) has proven to provide the best results when it comes to interpreting JavaScript

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