我在列表中有10个项目。我想只打印列表中的前5个项目。如何使用data-sly-list
添加条件答案 0 :(得分：2)
您可以将sly-test或<ul data-sly-list="${mylist}">
<li data-sly-test="${itemList.index < 5}">${itemList}</li>
</ul>
this与数据一起使用 - describe('Async Actions', () => {
it('should upload supplier and dispatch ADD_SUPPLIER', (done)=> { /*Let Mocha know that this is asnyc test*/
//mock a store
const store = createMockStore({});
//test supplier
var testSupplier = {
name: "new supplier",
fact_sheet: "fact sheet",
liability_sheet: "liability sheet",
group: "group",
service_lines: null,
policies: null,
rate_periods: null,
rate_costs: null,
contracts: null,
cancellation_terms: null,
deposit_terms: null,
commission: 22,
creation_date: moment().unix(),
country: "SA",
region: "Capetown",
email: "mail@m.com",
telephone: "2797179",
website: "ww.ww.ww",
category: "cat",
rating: 100
};
//Do the async action
store.dispatch(actions.startAddSupplier(testSupplier.name, testSupplier.fact_sheet, testSupplier.liability_sheet, testSupplier.group,
testSupplier.commission, testSupplier.country, testSupplier.region, testSupplier.email, testSupplier.telephone, testSupplier.website, testSupplier.category, testSupplier.rating)).then(
() => {
/*Assertions*/
const actions = store.getActions(); //returns array of all actions fired on store
expect(actions).toInclude({
type: 'ADD_SUPPLIER'
});
/*done to show test is done*/
done();
}).catch(done);//if done is called with args it is assumed the test has failed
});
});
，如：
FAILED TESTS:
Actions
Supplier Actions
Async Actions
✖ should upload supplier and dispatch ADD_SUPPLIER
Chrome 53.0.2785 (Mac OS X 10.12.0)
Error: Expected [ { supplier: { cancellation_terms: null, category: 'cat', commission: 22, contracts: null, country: 'SA', creation_date: 1476087460, deposit_terms: null, email: 'mail@m.com', fact_sheet: 'fact sheet', group: 'group', id: '-KThemyhqrmDHuF_PV2H', liability_sheet: 'liability sheet', name: 'new supplier', policies: null, rate_costs: null, rate_periods: null, rating: 100, region: 'Capetown', service_lines: null, telephone: '2797179', website: 'ww.ww.ww' }, type: 'ADD_SUPPLIER' }, { key: '-KThemyhqrmDHuF_PV2H', type: 'SET_CURR_SUPPLIER' } ] to include { type: 'ADD_SUPPLIER' }
at Object.assert [as default] (eval at <anonymous> (/Users/zacck/Documents/www/jtx/app/tests/actions/actions.test.jsx:1231:2), <anonymous>:20:9)
at Expectation.toInclude (eval at <anonymous> (/Users/zacck/Documents/www/jtx/app/tests/actions/actions.test.jsx:1129:2), <anonymous>:190:26)
at eval (eval at <anonymous> (/Users/zacck/Documents/www/jtx/app/tests/actions/actions.test.jsx:47:2), <anonymous>:129:42)
或者，如果您的列表很大并且您不想迭代它，那么您可以定义一个Use-API帮助程序，它创建一个只包含前5个所需元素的新列表。