1

我无法弄清楚如何从下面的方法中获取返回值。我正在将项目添加到数组中。这很好用。我只是无法从函数返回数组。

var termList = loadTerms(termSetId);

function loadTerms(termSetId) {

        var termList = [];
        var taxSession = SP.Taxonomy.TaxonomySession.getTaxonomySession(clientContext);
        var termStore = taxSession.getDefaultSiteCollectionTermStore();
        var termSet = termStore.getTermSet(termSetId);
        var terms = termSet.getAllTerms();

        clientContext.load(terms, 'Include(Name)');

        clientContext.executeQueryAsync(
            function () {                    

                for (var i = 0; i < terms.get_count(); i++) {

                    var term = terms.getItemAtIndex(i);
                    termList.push(term);
                    console.log(String.format('12 Term : {0}', term.get_name()));
                }

                // At this point TermList has the values I need. How do I return it to the caller?

            });            
    }
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1 回答 1

2

这是不可能的，因为您无法从同步方法中的异步调用返回。但是你可以通过传递一个回调函数得到你想要的。

var termList = loadTerms(termSetId);

function loadTerms(termSetId, callback) {

  var termList = [];
  var taxSession = SP.Taxonomy.TaxonomySession.getTaxonomySession(clientContext);
  var termStore = taxSession.getDefaultSiteCollectionTermStore();
  var termSet = termStore.getTermSet(termSetId);
  var terms = termSet.getAllTerms();

  clientContext.load(terms, 'Include(Name)');

  clientContext.executeQueryAsync(
    function() {

      for (var i = 0; i < terms.get_count(); i++) {

        var term = terms.getItemAtIndex(i);
        termList.push(term);
        console.log(String.format('12 Term : {0}', term.get_name()));
      }

      callback(termList); // callback here

    });
}

loadTerms("termSetId", function(returnedValue) {
  console.log(returnedValue); //You get the value here.
});

于 2017-10-28T03:48:53.833 回答