Function: dom-add-child-before

dom-add-child-before is a byte-compiled function defined in dom.el.gz.

Signature

(dom-add-child-before NODE CHILD &optional BEFORE)

Documentation

Add CHILD to NODE's children before child BEFORE.

If BEFORE is nil, make CHILD NODE's first child.

Source Code

;; Defined in /usr/src/emacs/lisp/dom.el.gz
(defun dom-add-child-before (node child &optional before)
  "Add CHILD to NODE's children before child BEFORE.
If BEFORE is nil, make CHILD NODE's first child."
  (setq node (dom-ensure-node node))
  (let ((children (dom-children node)))
    (when (and before
	       (not (memq before children)))
      (error "%s does not exist as a child" before))
    (let ((pos (if before
		   (cl-position before children)
		 0)))
      (push child (nthcdr (+ 2 pos) node))))
  node)