我想用extjs做textfiled绑定,条件如下,我做错了什么?
小提琴.
你忘了将第二个字段的值绑定到'field2'。这个例子可以用。
Ext.application({
name: 'Fiddle',
launch: function () {
Ext.define('MyViewModel', {
extend: 'Ext.app.ViewModel',
alias: 'viewmodel.myvm',
data: {
field1: '',
field2: '',
field3: ''
},
formulas: {
fieldTwoDisabled: function (get) {
return Ext.isEmpty(get('field1'));
},
fieldThreeDisabled: function (get) {
return !(!Ext.isEmpty(get('field1')) && !Ext.isEmpty(get('field2')));
}
}
});
Ext.create({
xtype: 'panel',
title: 'VM Demo',
fullscreen: true,
defaults: {
xtype: 'textfield'
},
viewModel: {
type: 'myvm'
},
items: [{
label: 'Field 1',
bind: '{field1}'
}, {
label: 'Field 2',
bind: {
value: '{field2}', // THIS BINDING IS FORGOTTEN
disabled: '{fieldTwoDisabled}'
}
}, {
label: 'Field 3',
bind: {
disabled: '{fieldThreeDisabled}'
}
}]
})
}
});