jQuery - 添加元素append/prepend和after/before的差別

append

<p>
  <span class="s1">s1</span>
</p>
<script>
$("p").append('<span class="s2">s2</span>');
</script>      

結果是這樣的:

<p>
  <span class="s1">s1</span>
  <span class="s2">s2</span>
</p>      

after

<p>
  <span class="s1">s1</span>
</p>
<script>
$("p").after('<span class="s2">s2</span>');
</script>      

結果是這樣的:

<p>
  <span class="s1">s1</span>
</p>
<span class="s2">s2</span>      

總結：

append/prepend 是在選擇元素内部嵌入。

after/before 是在元素外面追加。

轉載于:https://www.cnblogs.com/EricZLin/p/8434322.html