javascript - 使用 javascript 检索 <noscript> 标签数据

Question

我有这个<noscript>我想通过 javascript/jQuery 获取图像 src 属性数据的标签数据 我已经尝试了太多但我无法获取请帮助我获取图像 src 属性数据

<script>
// Using javascript 
var nos = document.getElementsByTagName("noscript")[0];
var htmlData = nos.innerHTML;
</script>

jQuery(function() {
var data = jQuery("noscript").closest("#anaImg").attr('src');
      alert(data);     
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<noscript>
<p><img src="http://xxxx.xxxxx.com/analytics/conv_tracking.php?idsite=1545" style="border:0;" alt="" id="anaImg"/></p>
</noscript>

Answer 1

你可以使用一个隐藏的div，并在其中附加noscript标签内容作为html

示例:

var noscript_text = $("noscript").text();     //get noscript tag content
$('#noscript').append($(noscript_text));      //append to another div to get the image src
var get_img_src = $('#anaImg').attr('src');   // get the img src
var new_img_src = "nothing";                  // type your new img src here
var replace_img_src = noscript_text.replace(get_img_src,new_img_src); // replace old img src with new one
$("noscript").text(replace_img_src);          // change the content of no script tag with new src
alert($("noscript").text());                  // alert the new noscript tag content

#noscript{
  display: none;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<noscript>
<p><img src="http://xxxxxxxx.xxxxxxxxxxx.com/analytics/conv_tracking.php?idsite=1545" style="border:0;" alt="" id="anaImg"/></p>
</noscript>

<div id="noscript"></div>

Note: please take care from #noscript this is an ID for the div and noscript this is for noscript tag