[英]textarea value in angularjs
我知道它与此类似。在下面的控制器中,我不知道如何获取textarea值。 在jQuery中,我只想做$(“#textarea1”)。val(); 但不能在这里做。 另外,如果我为textarea创建新模型ienote,我可以将其称为$ scope.note位,但仍然不知道如何为它分配textarea。
var app = angular.module("angularApp", []).controller("myConfigGenCtrl", function($scope) {
$scope.textarea1 ="";
$scope.clear = function() {
$scope.textarea1 = "";
};
$scope.save = function(data, filename) {
data = $scope.textarea1;
var blob = new Blob([data], {type: "text/plain;charset=utf-8"});
filename = "textarea.txt";
console.log($scope.textarea1);
saveAs(blob, filename);
};
});
这是html
<body ng-app="angularApp">
<div ng-controller="myConfigGenCtrl">
<form name="myform">
<input type="text" ng-model="message1"/>
<input type="text" ng-model="message2"/>
</form>
<p>
<textarea id="textarea1" cols="80" rows="10">
This is {{message1}} in 1st line
This is {{message2}} in lastst line
</textarea>
</p>
<p>
<button ng-click="save()">Save</button>
<button ng-click="clear()">Clear</button>
</p>
</div>
</body>
给它分配一个ng-model
:
<p><textarea id="textarea1" cols="80" rows="10" ng-model="myTextArea">
This is {{message1}} in 1st line
This is {{message2}} in lastst line
</textarea></p>
然后,您可以使用$scope.myTextArea
从控制器中获取它
您还可以使用$watch
从其他范围值获取数据并放入textarea中:
angular.module('myApp', [])
.controller('dummy', ['$scope', function ($scope) {
$scope.$watch("message1", function (newVal, oldVal) {
if (newVal !== oldVal) {
$scope.myTextArea = "This is "+newVal+" in 1st line";
}
});
$scope.save = function () {
console.log($scope.myTextArea);
};
}]);
更新:
您还可以在输入文本中使用ng-change
来更改myTextArea
范围值:
HTML:
<input type="text" ng-model="message1" ng-change="myTextArea = message1 + message2" />
<input type="text" ng-model="message2" ng-change="myTextArea = message1 + message2" />
<p>
<textarea id="textarea1" cols="80" rows="10" ng-model="myTextArea" ></textarea>
</p>
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