var querytop = new AV.Query('modelslists');

querytop.WhereMatches("name", "i"); 
querytop.WhereMatchesQuery('name', e.detail.value.seachstring, "i");
querytop.contains('name', e.detail.value.seachstring);
------------------------------------------------------------------------

    querytop.find().then(function (results) {
      console.log(results)
    }, function (error) {
      // 异常处理
    });

结果错误
querytop.WhereMatches is not a function;at page/index/index page formSubmit function
TypeError: querytop.WhereMatches is not a function

找到了 这样写。。。
querytop.matches('name', e.detail.value.seachstring, "i");