問(wèn)題描述

我目前正在使用 HtmlUnit 開(kāi)發(fā)一些測(cè)試.它正在加載一個(gè)包含 Braintree.js(他們的表單加密庫(kù))的頁(yè)面.我有一堆正在運(yùn)行，但我被困在它稱為加密的地方.有問(wèn)題的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 正在拋出:

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個(gè)加密庫(kù)?

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

推薦答案

根據(jù)您的評(píng)論，我不得不告訴您，HtmlUnit 在涉及到 JavaScript 時(shí)是一個(gè)令人頭疼的問(wèn)題.它會(huì)抱怨很多沒(méi)有定義的變量和未知的函數(shù)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.

真正的瀏覽器更靈活，例如:它們接受語(yǔ)法不正確的 JavaScript 片段.HtmlUnit 期望一切都是完美的，沒(méi)有任何錯(cuò)誤.此外，即使您沒(méi)有錯(cuò)過(guò)分號(hào)，HtmlUnit 也可能會(huì)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.

我的建議:

• 確保您的 JavaScript 語(yǔ)法正確
• 避免使用復(fù)雜庫(kù)的用戶(jQuery 似乎得到了適當(dāng)?shù)闹С?
• 如果您可以使用非最小化版本的庫(kù)，那么值得一試
• 盡量避免使用復(fù)雜的 jQuery 方法(例如:向元素動(dòng)態(tài)添加事件)
• 還有最重要的一點(diǎn):嘗試在不同的 BrowserVersions 之間切換.事實(shí)證明，Internet Explorer(具有諷刺意味的是)在解釋 JavaScript 時(shí)提供了最佳結(jié)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

這篇關(guān)于JavaScript 未在 HtmlUnit 中正確執(zhí)行的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！