<!--updateOn:'blur'(失去焦点更新)-->
<input type="text" ng-model="a" ng-model-options="{updateOn:'blur'}"><br>
{{a}}<br>
<!--updateOn:'default blur'(输入的同时和失去焦点都更新)-->
<input type="text" ng-model="b" ng-model-options="{updateOn:'default blur'}"><br>
{{b}}<br>
<!--debounce:1000(延时1000毫秒更新)-->
<input type="text" ng-model="c" ng-model-options="{debounce:1000}"><br>
{{c}}<br>
<!--updateOn:'default blur',debounce:{default:1000,blur:0}默认更新延时1000毫秒，失去焦点立即更新-->
<input type="text" ng-model="d" ng-model-options="{updateOn:'default blur',debounce:{default:1000,blur:0}}"><br>
{{d}}<br>
