I am attempting to connect the value of ng-init to an input from a JSON object.
However, I am receiving a "Syntax Error: Token" message. Can someone help me identify where I am making a mistake?
$scope.obj = { init: 'obj.value = obj.value || 20' };
I am attempting to connect the value of ng-init to an input from a JSON object.
However, I am receiving a "Syntax Error: Token" message. Can someone help me identify where I am making a mistake?
$scope.obj = { init: 'obj.value = obj.value || 20' };
Consider using ng-required in place of ng-init
<form name="myformname">
<input type="text" name="myinputname" ng-model="data.value" ng-required="{{data.init}}" />
</form>
Hopefully this suggestion is beneficial to you :)
Let's imagine 'begin' as a function that updates the value of the object.
$scope.obj = {
begin: function(){
$scope.obj.value = $scope.obj.value || 20;
}
};
<input type="text" name="someinputname" ng-model="obj.value" ng-init="obj.begin()" />
Take a look at the Plunker
Here is a code snippet you can experiment with:
HTML
<input type="text" name="newinputname" ng-model="newObj.value" ng-init="initializeNewObj()" />
JavaScript
$scope.newObj = {
value: null
};
$scope.initializeNewObj = function() {
$scope.newObj = {
initialized: {
value: $scope.newObj.value | 20
}
};
$scope.newObj = $scope.newObj.initialized;
}
This method can achieve the desired result:
ng-init="$eval(obj.init)"
ng-init essentially performs this action: scope.$eval(attrs.ngInit), meaning that the provided expression will be executed in this manner:
scope.$eval('$eval(obj.init)')
This will execute the expression stored in the variable obj.init.
Simply removing the curly brackets, as some have suggested, will not have the desired effect because it would result in the following function call:
scope.$eval('obj.init')
This would only return the value of obj.init and not actually execute it!
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