Using $(this) after .replaceWith()

问题

Please consider the below HTML and Javascript. In the script, I am replacing an a tag with a p tag. I am expecting the alert() function to return the contents of the p tag but instead it returns the contents of the original a tag which no longer exists.

How can I reference the new element?

HTML:

<a href="">This is a link</a>

Javascript:

$(document).ready(function() {
    $("a").each(function() {
        $(this).replaceWith('<p>New Paragraph</p>');
        alert($(this).text());
    });
});

回答1:

You can't do it directly with .replaceWith(), but you can create it separately. Try this:

$(document).ready(function() {
    $("a").each(function() {
        var p = $('<p>New Paragraph</p>');
        $(this).replaceWith(p);
        alert(p.text());
    });
});

回答2:

You can use the replaceAll method instead, which returns the new content instead of the original content:

$(document).ready(function() {
  $("a").each(function() {
    alert($('<p>New Paragraph</p>').replaceAll($(this)).text());
  });
});

回答3:

Try this:

alert($(this).replaceWith('<p>New Paragraph</p>').text());

来源：https://stackoverflow.com/questions/4399424/using-this-after-replacewith