var xm_one = xmSelectrender el #tree_one tips 请选择行业标签 empty 呀数据为空 filterable true searchTips 请在此搜索标签 paging false pageSize 10 radio false repeat false clickClose false

The error "Uncaught TypeError: Cannot read properties of undefined (reading '$el')" indicates that the "$el" property is undefined.

In the code provided, it seems that the issue occurs when trying to access the "$el" property of "xm_one.tree".

To fix this error, you can check if "xm_one.tree" is defined before accessing its "$el" property.

Here's an updated version of the code that includes the check:

if (xm_one.tree && xm_one.tree.$el) {
    xm_one.tree.$el.on('clickCheck', function (data) {
        var item = data.item;
        var isParent = item.children.length > 0;

        if (isParent) {
            if (item.checked) {
                xm_one.tree.setCheck(item.children, true);
            } else {
                xm_one.tree.setCheck(item.children, false);
            }
        } else {
            var parent = item.parent;

            if (item.checked) {
                xm_one.tree.setCheck(item.parent, false);
            } else {
                var siblings = parent.children;
                var uncheckedSiblings = siblings.filter(function (sibling) {
                    return !sibling.checked;
                });

                if (uncheckedSiblings.length === siblings.length - 1) {
                    xm_one.tree.setCheck(parent, true);
                }

                xm_one.tree.setCheck(item.parent, true);
            }
        }
    });
}

By adding the check for "xm_one.tree" and "xm_one.tree.$el", the error should be resolved