I am trying to loop through json array inside the template, here is what I have tried:
Json array is in this format: [{"a":123,"b":234},{"a":1233,"b":23232}]
when I give this expression:
<div ng-repeat=(name,value) in row.entity["'+branch_name+'_wu_tester_detail"]>{{name}} :: {{value}} </div>
I m getting this error:
Error: [ngRepeat:iexp] Expected expression in form of 'item in
_collection[ track by _id]' but got '(name,value)'.
Also I have tried this:
<div ng-repeat=items in row.entity["'+branch_name+'_wu_tester_detail"]>{{items.tester_id}} :: {{items.workunit_id}}</div>
But this also is not working.
FYI here the branch_name is variable and the value of row.entity["'+branch_name+'_wu_tester_detail"] is in format of [{"a":123,"b":234},{"a":1233,"b":23232}]
Thanks in advance
Didn't find any perfect solution but got a good workaround. Here it seems angular is confused while parsing the expression in ng-repeat. Even escape character doesn't seems to work. So I stored this variable to a much simpler otehr variable using ng-init and then I used ng-repeat, which solved the problem.
If there are any better way, please add to this question, I will add that as accepted answer.
<div ng-init=myJsonVar=row.entity[\"'+branch_name+'_wu_tester_detail\"]> {{myJsonVar}}</div><div ng-repeat="item in myJsonVar">IN{{item.tester_id}} :: {{item.workunit_id}} </div>
Related
I am trying to write a HTML tag
<li ng-repeat="(key, value) in getusermenu">
<a ng-click="ctrl.{{key}}()" ng-href="#!{{key}}">{{value}}</a></li>
. Here I am getting values of key and value successfully. But the problem here is
ng-click="ctrl.{{key}}()" is not calling the function. But when I am hardcoding(ng-click="ctrl.functionName1()") the function name it's running fine. The problem here is, angular js is not printing the key if it is in middle. How I can achieve this?
Use bracket notation to access object property by variable name:
ng-click="ctrl[key]()"
May be This is a simple question but it is challenging for me.
In angularJS when i write {{}} in html code so i write code like this like
if i talk about dynamic id, we write like code this
<div ng-repeat = 'item in itmes track by $index'>
<div id = "div-{{$index}}">{{item.name}}</div>
</div>
If i use any model without {{}} i write this example
<input id = 'name' ng-model = "item.name"/>
whenever i am coding in angular js, i write code without {{}} then if it is not work then i try code with {{}} and vise versa. and randomly 1 will correct
Question is when i write code with {{}} and without {{}} in html code ?
After the OP explained what exactly was the problem.
So, the question here is very simple: when do we use {{}} and when we don't in the context of ng-model.
When you do a <input type=... ng-model="someModel>, what you're essentially telling Angular is: "Here is an input element; attach $scope's someModel variable to the value of this input element.
Now, you can use this in your JavaScript controller like so: $scope.someModel, but what about HTML? We have a templating language in Angular, and when you give it some variable (say someModel), it'll search its $scope for it, and then put in the value there. If it is unable to, it'll throw a nasty error.
In essence, {{}} GETS the value, without that, you generally set the variable to gold the value of something.
Very simply put, AngularJS thinks that the content within the brace is an expression, which must be resolved. Once it is, Angular puts the value of the resolved expression there. In the most basic of the terms, you just tell it: "Here is some expression; put the evaluated value instead."
In ES6, we call it template strings.
So, you'll use it for expressions which mutate after every iteration. Say, a loop or something. Places where you know what the answer is, or you have static content, you won't use it.
Say you have the following bit of code:
...
...
$scope.figureOne = 10;
in your controller.js and the following in its view file:
<div>My age is {{ figureOne }}</div>
Angular gets the value from the $scope, and puts it there; so, the rendered form will be: My age is 10. However, if you had the following
<div>My age is figureOne</div>
This time, Angular knows that there is nothing to evaluate or resolve, so, it'll just render it as it is: My age is figureOne.
I hope I made it clear! :)
Angular directives have different types of parameters. Some parameters (#) expect string values and some expect javascript expressions (=) (with variables bound to $scope).
There's no obvious way to know which parameter expects what type of value (aside from looking at documentation).
If a variable expects static string value and you have an angular expression
then you'll need to evaluate it by wrapping in {{}}
If there variable expects an expression and you have an expression
simply type that in.
It's the best to avoid using {{}} where possible, your dynamic ID will fail when Angular hasn't interpolated the expression yet, use ng-attr-id="div-{{$index}} for that. https://docs.angularjs.org/guide/directive#-ngattr-attribute-bindings
Another example, if you have a slow connection and Angular isn't loaded yet users will see the {{}}, you can avoid this by using ng-bind="".
See this thread for more info: AngularJS : Why ng-bind is better than {{}} in angular?
It is very simple.
{{something}} - used for one way binding(Static).
<input type="text" value="{{something}}">
Now if you change its value in HTML ,you can not get it by $scope.something in js.
but If you use ng-model="something",you can get its value in JS.
This happens because ng-model is two way binding.
<input type="text" ng-model="something">
Mostly We use ng-model for forms and {{}} to display static information like User details or else.
I have a quick question on AngularJS:
I have one property from JSON as
"icon-class": "home"
Now I need to do this in my html page:
<span class="{{sub.icon-class}}"></span>
the sub is some other object here.
But inspecting the DOM, the value of the above expression is always zero (0). I guess the dash(-) is acting like a subtraction here.
How to do it I could not make it resolve.
Please help.
In this case, you can use bracket notation to retrieve the value when the key has non-standard characters:
<span class="{{sub['icon-class']}}"></span>
Read more about accessing properties at MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Property_Accessors
You could do this:
<span class="{{sub['icon-class']}}"></span>
But in general I'd avoid hyphens in variable names
I have a ngRepeat element that has a delete button that triggers a confirmation message. I'm trying to make the confirmation message show with a dynamic expression like so:
<div ng-repeat="item in items">
<a ng-click="delete(item_id)"></a>
<span ng-show="{{item._id}}_delete">Are you sure you want to delete your review? </span>
</div>
I'm not sure if this is the right way to create dynamic expressions, but this is the only way I can get the expression to at least generate in html.
But I am getting this error for all the repeated items (with different item ids in each error):
Error: [$parse:syntax] Syntax Error: Token 'cb0a2a73ede6e3a9d7a58_delete' is an unexpected token at column 4 of the expression [543cb0a2a73ede6e3a9d7a58_delete] starting at [cb0a2a73ede6e3a9d7a58_delete].
^ the outputted item._id for that item is 543cb0a2a73ede6e3a9d7a58 for example.
Angular is expecting an expression there that returns true or false for ng-show. So just rendering a String won't really help. You could either define a controller function that resolves to true or false or just write the expression inline, like ng-show="item.id === 2".
But it seems that you want a confirmation dialog before deleting, in that case you should write a custom directive that intercepts the click action before executing it (unfortunately there is no such thing as ng-confirm in Angular built-in).
Here is an example of such a directive: https://gist.github.com/asafge/7430497
If you simply want to toggle a message to the user, you could simply make your span dependant on a scope variable that gets toggled, like so:
<a ng-click="delete(item_id); showDelete=!showDelete">item</a>
<span ng-show="showDelete">Are you sure you want to delete your review? </span>
JSFiddle here.
However, you probably want to wrap it all up into a directive like #frank blizzard mentioned.
try this one :)
AH, if item._id starts with a number it will get a error
Variable names must begin with a letter
link
so ng-show bound to a variable in the scope and it is dynamically creating. a_delete,b_delete will work fine but if it generate like 1_delete,2_delete it will result a error because those are starts with a number.
In your case item._id starts with number like 543cb0a2a73ede6e3a9d7a58 as you mentioned in you question. so ng-show ends with something like ng-show="543cb0a2a73ede6e3a9d7a58_delete". That should get a error because of violation of naming-conventions.
I have the follow code:
<li class='' ng-click="changeStatus('hello', '{{result.name}}')">
Where 'hello' is my first parameter for changeStatus and I want to pass of binded result.name's value as the second parameter. Does anyone know how to accomplish this?
I tried {{result.name}}, '{{results.name}}' but neither seems to work.
There is probably something simple that am I missing?
I took a look at:
Can you pass parameters to an AngularJS controller on creation?
but both the parameters in ng-init were string literals.
You don't have to pass it.
You could just access it in your controller using :
$scope.result.name
If results is an array and you want to pass an individual result to a controller click function you need not decorate it with curly braces. The li will look like this:
<li ng-repeat="result in results" ng-click="changeStatus('hello', result.name)">{{result.name}}</li>
Working Fiddle
Angular treats the content of ng-click as an expression. This means that you write the content as though it is plain javascript (in most cases). For your example, this means leaving out the curly braces (since you are already writing 'javascript').
<li class='' ng-click="changeStatus('hello', result.name)">