Use jQuery to wrap text after element

问题

What I have:

A checkbox inside a label.

<label for="foo">
  <input type="checkbox" id="foo" />bar
</label>

What I need:

Using jQuery, I need to to wrap the text following the checkbox (i.e. "bar"), in a span element.

<label for="foo">
  <input type="checkbox" id="foo" /><span>bar</span>
</label>

What I've tried:

$('label').wrapInner('<span></span>');

This does not exclude the checkbox as required.

回答1:

If you want to wrap the text node, you could filter the contents of the element based on whether the nodeType property is 3 (which is the value of a text node), and wrap the returned text node.

$('label').contents().filter(function () {
  return this.nodeType === 3;
}).wrap('<span></span>');

Alternatively, if you know the text node will always be the next sibling of the input element, you could select the next sibling node using the nextSibling property:

$('label input').each(function () {
  $(this.nextSibling).wrap('<span></span>');
});

来源：https://stackoverflow.com/questions/34834061/use-jquery-to-wrap-text-after-element