Jquery取消注释head标记内的第二个子标记

Question

我在head标签里有两个注释标签。我只想取消第二条评论的注释。

var x = "<html><head><!-- <#if> I don't want any change </#if> --><!-- <#if>I want to uncomment </#if> --></head></html>";

$(x).contents().each(function(index, node) {
     if (node.nodeType == 8) {
        $(node[0]).replaceWith(node.nodeValue);
    }
});

alert(x);

输出应为：

<html>
<head>
    <!-- <#if> I don't want any change </#if> -->
    <#if> I want to uncomment </#if>
<head>
</html>

Answer 1

也许吧

var x = document.getElementsByTagName("head")[0].innerHTML;

var parts = x.split("<!-- "); 
parts[2]=parts[2].replace(" -->",""); 
parts[1] = "<!-- " + parts[1]; 
document.getElementsByTagName("head")[0].innerHTML=parts.join("");