玩轉angularJs——通過自定義ng-model,不僅僅只是input可以有雙向綁定
阿新 • • 發佈:2017-05-22
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angularJs雙向綁定特性在開發中很方便很實用,但是由於ng-model一般只能掛在input上,因此我們需要自定義ng-model來在div等元素上使用該標簽。
自定義指令:
1 //自定義ngModel的屬性 2 .directive(‘contenteditable‘, [‘$window‘, function() { 3 return { 4 restrict: ‘A‘, 5 require: ‘?ngModel‘, // 此指令所代替的函數 6 link: function(scope, element, attrs, ngModel) { 7 if (!ngModel) { 8 return; 9 } // do nothing if no ng-model 10 // Specify how UI should be updated 11 ngModel.$render = function() { 12 element.html(ngModel.$viewValue || ‘‘);13 }; 14 // Listen for change events to enable binding 15 element.on(‘blur keyup change‘, function() { 16 scope.$apply(readViewText); 17 }); 18 // No need to initialize, AngularJS will initialize the text based on ng-model attribute19 // Write data to the model 20 function readViewText() { 21 var html = element.html(); 22 // When we clear the content editable the browser leaves a <br> behind 23 // If strip-br attribute is provided then we strip this out 24 if (attrs.stripBr && html === ‘<br>‘) { 25 html = ‘‘; 26 } 27 ngModel.$setViewValue(html); 28 } 29 } 30 } 31 }])
頁面中div可以這樣使用ng-model:
1 <div class="icon-arrow-title title-color-2" contenteditable="true" ng-model="param.MobileNum" style="right: 15px;"></div>
雙向綁定就可以用了。
玩轉angularJs——通過自定義ng-model,不僅僅只是input可以有雙向綁定