在 Sharepoint 中使用 Javascript 創建和更新列表項

Question

您好，我是初學者，我嘗試創建/更新帶有條件的 Javascript 的 SP 列表。 如果當前用戶 email 的列表條目存在，那么我將只更新字段位置，否則我將添加一個新條目。 請你幫助我好嗎

    function createUpdateListItem() {
        var siteUrl = 'https://........';
        var clientContext = new SP.ClientContext(siteUrl);
        var oList = clientContext.get_web().get_lists().getByTitle('MyList');
        var currentuserID = currentUser.get_email();
        var e = document.getElementById("choice");
        var stdort = e.options[e.selectedIndex].text;
        var user = oList.get_item('Email');

        if (user === currentuserID) {
            var listItem = list.getItem('Email');
            listItem.set_item('Location', stdort);
            listItem.update();
            clientContext.executeQueryAsync(Function.createDelegate(this, 
            this.onQuerySucceededUpdate), Function.createDelegate(this, this.onQueryFailedUpdate)
            );
        }
        function onQuerySucceededUpdate() { alert('Item updated successfully !');
        }

        function onQueryFailedUpdate(sender, args) { alert('Could not able to update item: ' + args.get_message());
        }
        }

        if user != currentuserID {
        var itemCreateInfo = new SP.ListItemCreationInformation();
        var oListItem = oList.addItem(itemCreateInfo);
            
        oListItem.set_item('Employee', currentUser.get_title());
        oListItem.set_item('Email', currentUser.get_email());
        oListItem.set_item('Location', stdort);
        oListItem.update();

        clientContext.load(oListItem);
        clientContext.executeQueryAsync(
            Function.createDelegate(this, this.onQuerySucceededCreate), 
            Function.createDelegate(this, this.onQueryFailedCreate)
        );
      }
    function onQuerySucceededCreate() { alert('Item created: ' + oListItem.get_id());
    }
    function onQueryFailedCreate(sender, args) { alert('Request failed. ' + args.get_message() + 
            '\n' + args.get_stackTrace());
    }
}

如果我創建單獨的函數作為示例只創建然后它工作，但我需要創建或更新列表條目

Answer 1

首先，請檢查您的代碼中的 {} 是否正確配對，例如“if user,= currentuserID”不在 function 中，然后。 請把if語句的條件寫在()中。

以下是創建和更新列表的示例，您可以參考：

function retrieveListItems(siteUrl) {
var clientContext = new SP.ClientContext(siteUrl);
var oList = clientContext.get_web().get_lists().getByTitle('List Name');
var camlQuery = new SP.CamlQuery();
camlQuery.set_viewXml('<View><Query><Where><Geq><FieldRef Name=\'ID\'/>' + '<Value Type=\'Number\'>1</Value></Geq></Where></Query>' + '<RowLimit>10</RowLimit></View>'
);
this.collListItem = oList.getItems(camlQuery);   
clientContext.load(collListItem);
clientContext.executeQueryAsync(
    Function.createDelegate(this, function(){
    var listItemEnumerator = collListItem.getEnumerator();
    var listItemInfo="";
    while (listItemEnumerator.moveNext()) {
            var olistitem = listItemEnumerator.get_current();
            listItemInfo +=olistitem.get_item('Title');
        if(listItemInfo =="fff"){
            this.oListItem = oList.getItemById(olistitem.get_id());
            oListItem.set_item('Title', 'ccc');
                oListItem.update();
                clientContext.executeQueryAsync(onsuccessUpdate, onQueryFailed);
        }
        else if(listItemInfo !="fff")   {
            var itemCreateInfo = new SP.ListItemCreationInformation();
                this.oListItem = oList.addItem(itemCreateInfo);
            oListItem.set_item('Title', 'fff');
                oListItem.update();
                clientContext.load(oListItem);
            clientContext.executeQueryAsync(onsuccessCreate, onQueryFailed);
        }
        break;
    }
}) 
); } function onsuccessCreate() {alert('Item created: ' + oListItem.get_id());} function onsuccessUpdate() {alert('Item updated!');} function onQueryFailed(sender, args) {alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());}

Answer 2

function retrieveListItems(siteUrl) { var clientContext = new SP.ClientContext(siteUrl); var oList = clientContext.get_web().get_lists().getByTitle('Lista'); var camlQuery = new SP.CamlQuery(); camlQuery.set_viewXml( '<View><Query><Where><Geq><FieldRef Name=\'ID\'/>' + '<Value Type=\'Number\'>1</Value></Geq></Where></Query>' + '<RowLimit>10</RowLimit></View>' ); this.collListItem = oList.getItems(camlQuery); clientContext.load(collListItem); clientContext.executeQueryAsync( Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed) ); } function onQuerySucceeded(sender, args) { var listItemInfo = ''; var listItemEnumerator = collListItem.getEnumerator(); while (listItemEnumerator.moveNext()) { var oListItem = listItemEnumerator.get_current(); listItemInfo += oListItem.get_item('ID'); //'\nBody: ' + oListItem.get_item('Body'); for (var i = 0; i < listItemInfo.length; i++){ if (listItemInfo.split() == 12) { var siteUrl = var clientContext = new SP.ClientContext(siteUrl); var oList = clientContext.get_web().get_lists().getByTitle('List1'); var oListItem = oList.getItemById(12); this.oListItem = oList.getItemById(12); alert("ist gleich 12"); oListItem.set_item('Location', 'blub'); oListItem.update(); clientContext.executeQueryAsync(onQuerySucceess, onQueryFailed); } } alert(listItemInfo.toString());} } function onQuerySucceess() { alert('Item updated!'); } function onQueryFailed(sender, args) { alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace()); }