knockout.js 选件
示例
使用此绑定为选定项目构建选项
<select data-bind="options: gasGiants"></select>
<script type="text/javascript">
var viewModel = {
gasGiants: ko.observableArray(['Jupiter', 'Saturn', 'Neptune', 'Uranus'])
};
</script>您还可以使用数组内的属性在列表中显示和在viewModel中保存：optionsText启用自定义显示文本
optionsValue设置对应的value属性<option>
value将所选选项的值存储到viewModel的可观察对象中
<select data-bind="options: gasGiants, optionsText:'name', optionsValue:'id', value:selectedPlanetId"></select>
<script type="text/javascript">
var viewModel = {
selectedPlanetId: ko.observable(),
gasGiants: ko.observableArray([{name:'Jupiter', id:'0'},
{name:'Saturn', id:'1'},
{name:'Neptune', id:'2'},
{name:'Uranus', id:'3'}])
};
</script>要存储多选列表的结果，可以将选项绑定与selectedOptions绑定结合使用。
<select data-bind="options: gasGiants, selectedOptions: chosenGasGiants" multiple="true"></select>
<script type="text/javascript">
var viewModel = {
gasGiants: ko.observableArray(['Jupiter', 'Saturn', 'Neptune', 'Uranus'])
chosenGasGiants: ko.observableArray(['Jupiter','Saturn']) //初始选择
}; </script>