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当下拉列表中填充动态生成的数据时,是否有一种简单的方法来选择默认值?在AngularJs中动态填充下拉列表中设置默认值
我已经下拉,填充值为小时(实际上每15分钟:...,09:15,9:30,9:45,10:10,10:15,...)
我想要做的是默认选择页面加载值12:00(中午)。
我知道有一种方法可以通过给予价值指数来做到这一点,但我想探索一下有没有更好的方法来做到这一点?
这是我的下拉菜单:
<div class="col-md-2" ng-class="{ 'has-error has-feedback': addNewTestSession.sessionStartTime.$touched && addNewTestSession.sessionStartTime.$invalid }">
<label for="sessionStartTime">Session Start Time<span class="mandatory">*</span></label>
<select id="sessionStartTime" name="sessionStartTime" class="form-control"
ng-model="newTestSessionCtrl.formData.sessionTime"
ng-options="time for time in newTestSessionCtrl.viewData.sessionStarTimeIntervals"
ng-required="true">
<option value="" disabled selected>Select</option>
</select>
<span ng-show="addNewTestSession.sessionStartTime.$touched && addNewTestSession.sessionStartTime.$invalid"
class="fa fa-warning form-control-feedback"
uib-popover="This field is required."
popover-trigger="'mouseenter'"
popover-placement="auto right"
popover-class="additional-info"></span>
</div>
这个函数将生成的数据吧:
sessionStarTimeIntervals: this.generateTimeIntervalArray(15)
generateTimeIntervalArray(minutes) {
let retVal = [];
let hour = 0;
let minute = 0;
let whileTest = true;
function addZeroIfOneDigitvalue(value) {
if ((value + "").length === 1) {
value = "0" + value;
}
return value;
}
while (whileTest) {
if (hour === 24) {
break;
}
retVal.push(addZeroIfOneDigitvalue(hour) + ":" + addZeroIfOneDigitvalue(minute));
minute += minutes;
if (minute >= 60) {
minute = minute - 60;
hour++;
}
}
return retVal;
}
什么是对每一个页面加载选择12:00的最佳方式和途径?