这是一个使用 forEach 循环创建小部件的示例(在操场上工作)。我用来index
为小部件创建一个唯一 ID:
id: 'txiFirstName' + (index + 1)
我知道我可以通过使用非常有用的 id 和类来更改小部件的属性。
是否可以在没有 的情况下引用小部件.apply
?就像是:
txiFirstName[1] //which doesn’t work
谢谢,
代码(Tabrisjs 2.5)
const {Button, CheckBox, TextInput, TextView, ui} = require('tabris')
let persons = [
{ 'firstName': 'Bob', 'lastName': 'Smith', 'member': true },
{ 'firstName': 'Bill', 'lastName': 'Jones', 'member': false },
{ 'firstName': 'Fred', 'lastName': 'Picard', 'member': true }
]
let d = new Date()
persons.forEach((person, index) => {
console.log(person.firstName + ' ' + person.lastName + ' Member: ' + person.member)
let txiFirstName = new TextInput({
id: 'txiFirstName' + (index + 1),
left: 20, top: 'prev() 20', width: 80,
text: person.firstName
}).appendTo(ui.contentView)
let txiLastName = new TextInput({
id: 'txiLastName' + (index + 1),
left: 110, top: 'prev() -20', width: 100,
text: person.lastName
}).appendTo(ui.contentView)
let chkMember = new CheckBox({
id: 'chkMember' + (index + 1),
class: 'chkMember',
right: 5, top: 'prev() -20',
checked: person.member
}).appendTo(ui.contentView)
let txvDate = new TextView({
class: 'txvDate',
right: 5, top: 'prev()',
text: d
}).appendTo(ui.contentView)
}) // end forEach
let btnNotMember = new Button({
centerX: 0, top: 'prev() 20',
text: ' Make all persons non-members'
})
.on('select', () => {
ui.contentView.apply({'.chkMember': {checked: false}})
}).appendTo(ui.contentView)
let btnMember1 = new Button({
centerX: 0, top: 'prev() 20',
text: 'Change member 1 to Sherlock'
})
.on('select', () => {
ui.contentView.apply({'#txiFirstName1': {text: 'Sherlock'}})
}).appendTo(ui.contentView)
let btnUpdateDate = new Button({
centerX: 0, top: 'prev() 20',
text: 'Update date'
}).on('select', () => {
let d = new Date()
ui.contentView.apply({'.txvDate': {text: d}})
}).appendTo(ui.contentView)