多個選擇在angularjs中的佔位符

如何給angularjs中的多個select選擇一個佔位符？只有在選擇了search_functional_org的情況下，it_domain纔會被預先填充。是否有任何方法可以爲多重選擇提供佔位符。多個選擇在angularjs中的佔位符

<select class="form-control" id="it_domain" name="it_domain" ng-change="loadChart(1)" 
        ng-model="search_it_domain" multiple 
        ng-options="t for t in it_domains[search_functional_org]"> 
      </select>

Angularjs指令被宣佈爲單一選擇下拉菜單爲：

angular.directive('select', function($interpolate) { 
    return { 
     restrict: 'E', 
     require: 'ngModel', 
     link: function(scope, elem, attrs, ctrl) { 
      var defaultOptionTemplate; 
      scope.defaultOptionText = attrs.defaultOption || 'Select'; 
      defaultOptionTemplate = '<option value="" disabled selected style="display: none;">{{defaultOptionText}}</option>'; 
      elem.prepend($interpolate(defaultOptionTemplate)(scope)); 
     } 
    }; 
});

來源

2015-10-29 Jeevika

你需要在NG-重複添加元素。 –

如果使用的是選擇2與angularJs然後在這裏。

$(".js-example-responsive").select2({ 
     placeholder: "Select a state", 
     allowClear: true 
    });

HTML

<select class="js-example-responsive js-states select2-hidden-accessible" multiple="" style="width: 75%" tabindex="-1" aria-hidden="true"> 
    <optgroup label="Alaskan/Hawaiian Time Zone"> 
    <option value="AK">Alaska</option> 
    <option value="HI">Hawaii</option> 
    </optgroup> 
    <optgroup label="Pacific Time Zone"> 
    <option value="CA">California</option> 
    <option value="NV">Nevada</option> 
    <option value="OR">Oregon</option> 
    <option value="WA">Washington</option> 
    </optgroup> 
    <optgroup label="Mountain Time Zone"> 
    <option value="AZ">Arizona</option> 
    <option value="CO">Colorado</option> 
    <option value="ID">Idaho</option> 
    <option value="MT">Montana</option> 
    <option value="NE">Nebraska</option> 
    <option value="NM">New Mexico</option> 
    <option value="ND">North Dakota</option> 
    <option value="UT">Utah</option> 
    <option value="WY">Wyoming</option> 
    </optgroup> 
    <optgroup label="Central Time Zone"> 
    <option value="AL">Alabama</option> 
    <option value="AR">Arkansas</option> 
    <option value="IL">Illinois</option> 
    <option value="IA">Iowa</option> 
    <option value="KS">Kansas</option> 
    <option value="KY">Kentucky</option> 
    <option value="LA">Louisiana</option> 
    <option value="MN">Minnesota</option> 
    <option value="MS">Mississippi</option> 
    <option value="MO">Missouri</option> 
    <option value="OK">Oklahoma</option> 
    <option value="SD">South Dakota</option> 
    <option value="TX">Texas</option> 
    <option value="TN">Tennessee</option> 
    <option value="WI">Wisconsin</option> 
    </optgroup> 
    <optgroup label="Eastern Time Zone"> 
    <option value="CT">Connecticut</option> 
    <option value="DE">Delaware</option> 
    <option value="FL">Florida</option> 
    <option value="GA">Georgia</option> 
    <option value="IN">Indiana</option> 
    <option value="ME">Maine</option> 
    <option value="MD">Maryland</option> 
    <option value="MA">Massachusetts</option> 
    <option value="MI">Michigan</option> 
    <option value="NH">New Hampshire</option> 
    <option value="NJ">New Jersey</option> 
    <option value="NY">New York</option> 
    <option value="NC">North Carolina</option> 
    <option value="OH">Ohio</option> 
    <option value="PA">Pennsylvania</option> 
    <option value="RI">Rhode Island</option> 
    <option value="SC">South Carolina</option> 
    <option value="VT">Vermont</option> 
    <option value="VA">Virginia</option> 
    <option value="WV">West Virginia</option> 
    </optgroup> 
</select>

Link For Docs

來源

2015-10-29 06:45:05 ngLover

多個選擇在angularjs中的佔位符

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