尝试使用 DOMParser 解析 html 字符串时遇到的麻烦

本文介绍了尝试使用 DOMParser 解析 html 字符串时遇到的麻烦的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

片段来了:

html  = "<!doctype html>";
html += "<html>";
html += "<head><title>test</title></head>";
html += "<body><p>test</p></body>";
html += "</html>";

parser = new DOMParser();

dom = parser.parseFromString (html, "text/html");

尝试执行这些行时出现错误:

here's come the error when trying to execute these lines :

错误:组件返回失败代码:0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsIDOMParser.parseFromString]

我试图弄清楚发生了什么，但代码似乎是正确的，我在网上搜索，我来到这里没有任何线索.

I try to figure out what's going on but the code seems to be right and I searched on the web, i come here with no clues.

您以前遇到过这种故障吗?如果是，bug 隐藏在哪里?

have you encounter this failure before ? if yes, where's the bug hiding ?

我为你创建了小提琴 http://jsfiddle.net/CSAnZ/

/*
 * DOMParser HTML extension
 * 2012-02-02
 *
 * By Eli Grey, http://eligrey.com
 * Public domain.
 * NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
 */

/*! @source https://gist.github.com/1129031 */
/*global document, DOMParser*/

(function(DOMParser) {
    "use strict";
    var DOMParser_proto = DOMParser.prototype
      , real_parseFromString = DOMParser_proto.parseFromString;

    // Firefox/Opera/IE throw errors on unsupported types
    try {
        // WebKit returns null on unsupported types
        if ((new DOMParser).parseFromString("", "text/html")) {
            // text/html parsing is natively supported
            return;
        }
    } catch (ex) {}

    DOMParser_proto.parseFromString = function(markup, type) {
        if (/^s*text/htmls*(?:;|$)/i.test(type)) {
            var doc = document.implementation.createHTMLDocument("")
              , doc_elt = doc.documentElement
              , first_elt;

            doc_elt.innerHTML = markup;
            first_elt = doc_elt.firstElementChild;

            if (doc_elt.childElementCount === 1
                && first_elt.localName.toLowerCase() === "html") {
                doc.replaceChild(first_elt, doc_elt);
            }

            return doc;
        } else {
            return real_parseFromString.apply(this, arguments);
        }
    };
}(DOMParser));

这篇关于尝试使用 DOMParser 解析 html 字符串时遇到的麻烦的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

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尝试使用 DOMParser 解析 html 字符串时遇到的麻烦

问题描述

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