dynamodb delete all items in table

var hashKey = "id";
var rangeKey = null;
var tableName = "alert";

var scanParams = {
    TableName: tableName,
};

docClient.scan(scanParams, function(err, data) {
    if (err) ppJson(err); // an error occurred
    else {
       data.Items.forEach(function(obj,i){
           console.log(i);
            console.log(obj);
            var params = {
                TableName: scanParams.TableName,
                Key: buildKey(obj),
                ReturnValues: 'NONE', // optional (NONE | ALL_OLD)
                ReturnConsumedCapacity: 'NONE', // optional (NONE | TOTAL | INDEXES)
                ReturnItemCollectionMetrics: 'NONE', // optional (NONE | SIZE)
            };
    
            docClient.delete(params, function(err, data) {
                if (err) ppJson(err); // an error occurred
                else ppJson(data); // successful response
            });
        
       });
    }
});


function buildKey(obj){
    var key = {};
    key[hashKey] = obj[hashKey]
    if(rangeKey){
        key[rangeKey] = obj[rangeKey];
    }
    
    return key;
}

dynamodb delete all tables

dynamodb.listTables().eachPage(function(err, data) {
  
    if (err) {
        ppJson(err); // an error occurred
    } else if (data) {
        console.log(data);
          data["TableNames"].forEach(function(tablename, i) {
              console.log(tablename);
              var params = {
                TableName: tablename,
                };
                dynamodb.deleteTable(params, function(err, data) {
                    if (err) ppJson(err); // an error occurred
                    else ppJson(data); // successful response
                });
          })

    }
});

in golang: https://gist.github.com/dejanvasic85/cf9d5c3a947671bd3fb2e76938871585