如何使用JSOM在SP列表表单中保存时自动创建站点？

function createSiteOnSave() {
    var clientContext = new SP.ClientContext.get_current();
    var web = clientContext.get_web();
    var list = web.get_lists().getByTitle('CustomList');
    
    clientContext.load(list);
    clientContext.executeQueryAsync(function () {
        var listItemCreateInfo = new SP.ListItemCreationInformation();
        var newItem = list.addItem(listItemCreateInfo);
        
        // 设置列表项的其他字段值
        newItem.set_item('Title', 'New Item');
        
        newItem.update();
        clientContext.load(newItem);
        
        clientContext.executeQueryAsync(function () {
            // 在保存列表项后创建新站点
            createNewSite();
        }, function (sender, args) {
            console.log(args.get_message());
        });
    }, function (sender, args) {
        console.log(args.get_message());
    });
}

function createNewSite() {
    var clientContext = new SP.ClientContext.get_current();
    var web = clientContext.get_web();
    
    var siteCreationInfo = new SP.SiteCreationInformation();
    siteCreationInfo.set_title('New Site');
    siteCreationInfo.set_url('sites/newsite');
    siteCreationInfo.set_template('STS#0');
    
    var newSite = web.get_webs().add(siteCreationInfo);
    
    clientContext.load(newSite);
    clientContext.executeQueryAsync(function () {
        console.log('New site created successfully.');
    }, function (sender, args) {
        console.log(args.get_message());
    });
}