我尝试在<div>上使用innerHTML加载一些脚本到页面中。脚本似乎加载到DOM中,但它从未执行(至少在Firefox和Chrome中)。有一种方法让脚本执行时插入他们与innerHTML?

示例代码:

<!DOCTYPE html > < html > <身体onload = " . getelementbyid(机)。innerHTML = '<script>alert(\'hi\')<\/script>'"> 难道不应该出现“hi”的提醒吗? < div id = "装载机" > < / div > 身体< / > < / html >


当前回答

使用$(parent).html(code)代替parent。innerHTML = code。

下面还修复了使用document的脚本。通过SRC属性写入和加载脚本。不幸的是,即使这并不工作与谷歌AdSense脚本。

var oldDocumentWrite = document.write;
var oldDocumentWriteln = document.writeln;
try {
    document.write = function(code) {
        $(parent).append(code);
    }
    document.writeln = function(code) {
        document.write(code + "<br/>");
    }
    $(parent).html(html); 
} finally {
    $(window).load(function() {
        document.write = oldDocumentWrite
        document.writeln = oldDocumentWriteln
    })
}

其他回答

我自己的扭曲,使用现代JS和typescript。不知道为什么人们过滤tagName等时,querySelector就在那里。

对我来说很有魅力:

function makeScriptsExecutable(el: Element) {
  el.querySelectorAll("script").forEach(script => {
    const clone = document.createElement("script")

    for (const attr of script.attributes) {
      clone.setAttribute(attr.name, attr.value)
    }

    clone.text = script.innerHTML
    script.parentNode?.replaceChild(clone, script)
  })
}

你可以这样做:

var mydiv = document.getElementById("mydiv");
var content = "<script>alert(\"hi\");<\/script>";

mydiv.innerHTML = content;
var scripts = mydiv.getElementsByTagName("script");
for (var i = 0; i < scripts.length; i++) {
    eval(scripts[i].innerText);
}

下面是一个递归地将所有脚本替换为可执行脚本的方法:

function nodeScriptReplace(node) {
        if ( nodeScriptIs(node) === true ) {
                node.parentNode.replaceChild( nodeScriptClone(node) , node );
        }
        else {
                var i = -1, children = node.childNodes;
                while ( ++i < children.length ) {
                      nodeScriptReplace( children[i] );
                }
        }

        return node;
}
function nodeScriptClone(node){
        var script  = document.createElement("script");
        script.text = node.innerHTML;

        var i = -1, attrs = node.attributes, attr;
        while ( ++i < attrs.length ) {                                    
              script.setAttribute( (attr = attrs[i]).name, attr.value );
        }
        return script;
}

function nodeScriptIs(node) {
        return node.tagName === 'SCRIPT';
}

示例调用:

nodeScriptReplace(document.getElementsByTagName("body")[0]);

下面是一个递归函数来设置一个元素的innerHTML,我在我们的广告服务器中使用:

// o: container to set the innerHTML
// html: html text to set.
// clear: if true, the container is cleared first (children removed)
function setHTML(o, html, clear) {
    if (clear) o.innerHTML = "";

    // Generate a parseable object with the html:
    var dv = document.createElement("div");
    dv.innerHTML = html;

    // Handle edge case where innerHTML contains no tags, just text:
    if (dv.children.length===0){ o.innerHTML = html; return; }

    for (var i = 0; i < dv.children.length; i++) {
        var c = dv.children[i];

        // n: new node with the same type as c
        var n = document.createElement(c.nodeName);

        // copy all attributes from c to n
        for (var j = 0; j < c.attributes.length; j++)
            n.setAttribute(c.attributes[j].nodeName, c.attributes[j].nodeValue);

        // If current node is a leaf, just copy the appropriate property (text or innerHTML)
        if (c.children.length == 0)
        {
            switch (c.nodeName)
            {
                case "SCRIPT":
                    if (c.text) n.text = c.text;
                    break;
                default:
                    if (c.innerHTML) n.innerHTML = c.innerHTML;
                    break;
            }
        }
        // If current node has sub nodes, call itself recursively:
        else setHTML(n, c.innerHTML, false);
        o.appendChild(n);
    }
}

你可以在这里看到演示。

尝试使用template和document.importNode。这里有一个例子:

<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Sample</title> </head> <body> <h1 id="hello_world">Sample</h1> <script type="text/javascript"> var div = document.createElement("div"); var t = document.createElement('template'); t.innerHTML = "Check Console tab for javascript output: Hello world!!!<br/><script type='text/javascript' >console.log('Hello world!!!');<\/script>"; for (var i=0; i < t.content.childNodes.length; i++){ var node = document.importNode(t.content.childNodes[i], true); div.appendChild(node); } document.body.appendChild(div); </script> </body> </html>