Question

我在网上找不到这样的错误，所以我决定在这里发帖。

首先，这是我的package.json代码

{
  "name": "learning_nodejs",
  "version": "0.0.0",
  "description": "",
  "main": "script.js",
  "dependencies": {
    "optimist": "~0.6.1",
    "jquery": "~2.1.3",
    "jsdom": "*"
  },
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "BSD-2-Clause"
}

接下来，这是我试图在script.js中运行的javascript

var argv = require('optimist').argv;
var jsdom = require("jsdom");
var $ = require('jquery')(jsdom.jsdom().parentWindow);
var fs = require('fs');

var file = argv._[0];

var html = fs.readFileSync(file, 'UTF-8');

console.log(html);

当我进入这两个文件的目录时，我运行nodejs script.js page.html并返回此错误：

daniel@daniel-VirtualBox:~/Desktop/virtual_share/javascript_stuff/learning_nodejs$ nodejs script.js page.html

/home/daniel/Desktop/virtual_share/javascript_stuff/learning_nodejs/node_modules/jsdom/lib/jsdom/level1/core.js:287
          !vm.isContext(this._ownerDocument._global)) {
              ^
TypeError: Object function Script(code, ctx, filename) {
  if (!(this instanceof Script)) {
    return new Script(code, ctx, filename);
  }

  var ns = new binding.NodeScript(code, ctx, filename);

  // bind all methods to this Script object
  Object.keys(binding.NodeScript.prototype).forEach(function(f) {
    if (typeof binding.NodeScript.prototype[f] === 'function') {
      this[f] = function() {
        if (!(this instanceof Script)) {
          throw new TypeError('invalid call to ' + f);
        }
        return ns[f].apply(ns, arguments);
      };
    }
  }, this);
} has no method 'isContext'
    at Object.core.DOMImplementation._addFeature (/home/daniel/Desktop/virtual_share/javascript_stuff/learning_nodejs/node_modules/jsdom/lib/jsdom/level1/core.js:287:15)
    at Object.exports.applyDocumentFeatures (/home/daniel/Desktop/virtual_share/javascript_stuff/learning_nodejs/node_modules/jsdom/lib/jsdom/browser/documentfeatures.js:45:30)
    at Object.exports.jsdom (/home/daniel/Desktop/virtual_share/javascript_stuff/learning_nodejs/node_modules/jsdom/lib/jsdom.js:62:12)
    at Object.<anonymous> (/home/daniel/Desktop/virtual_share/javascript_stuff/learning_nodejs/script.js:3:33)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)

此外，如果重要，我在虚拟机上运行Ubuntu 14.04。提前谢谢！

Answer 1

这里有两个错误，它们都是相关的。

首先，我使用nodejs而不是node来运行我的应用程序。我不确定为什么，但我认为这是因为apt-get，所以我使用nvm来安装nodejs并解决了这个问题，但导致了另一个非常类似的问题。

显然jsdom在jsdom版本4.0+之后不能与nodejs一起使用，所以我得到了一个旧版本，现在一切正常。

nodejs - jsdom模块在require期间返回isContext（）错误

1 个答案: