Question

这里是片段：

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：

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

我试着弄清楚发生了什么，但代码似乎是正确的，我在网上搜索，我来这里没有任何线索。

你以前遇到过这种失败吗？如果是的话，这个bug隐藏在哪里？

Answer 1

您应该使用JavaScript DOMParser access innerHTML and other properties

中描述的DomParser函数

我为你创造了小提琴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\/html\s*(?:;|$)/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));

试图用DOMParser解析html字符串的麻烦

1 个答案: