how to log element in angular? - javascript

I am working on an Angular application and i have a view who is containing an iframe (The purpose of that iframe is just to display a login form).
Like my attempt to submit the form manually was unsuccessful, i tried to log the formular to check if i am really able to reach it but i am confused about how to do that...
the form inside the iframe have name attribute myForm
<iframe id="myIframe" name="myIframe" src="someUrl.com">
<html>
...
<form name="myForm" class="form" action="myAction()" method="post" onsubmit="myStuffToDO()">
...
...
</form>
...
</html>
</iframe>
So the way that i am trying to log the form in my controller is like that:
var iframeForm = angular.element.find('myForm');
console.log(iframeForm);
the result in hte console is that:
[]
I am really confused about how to do that so any help would be really kind.

.find('myForm') would find <myForm> tags, not tags with an attribute with the "myForm" value. .find('[name="myForm"]') is what you are looking for, but it won't work with the built-in element implementation because .find, as stated in the docs, is "Limited to lookups by tag name".
That means you'll need to also include jQuery in your project. Then Angular will use it instead of its jqLite implementation and complex selectors will work.

You can access using form name withing scope like below:
console.log($scope.formName);
You can access all elements by their names inside formName object.

from the page you can access angular element by angular.element+jquery selector
eg : angular.element("[name='myForm']")

Related

AngularJS evaluate expression in "action" attribute

This afternoon I experienced a very strange behavior of AngularJS.
If an expression containing "//" is in "action" attribute of a form, then the angular gives interpolate error.
Please see the code below. If you run the code, the URL can be correctly displayed in all places except in "action" attribute.
<form
id="moodleform" target="my_iframe"
method="post" action="{{'http://www.someurl.com'}}"
style="{{'http://www.someurl.com'}}"
some-attr="{{'http://www.someurl.com'}}">
{{'http://www.someurl.com'}}
<input name="somefield" value="someValue"/>
<input type="submit" value="Submit">
Here is the Plunker that demonstrates this problem, if you inspect the form element, you can see the action attribute is empty and there is error in console saying $interpolate:interr
https://plnkr.co/edit/R2ypg6WWmro1WdrNy6mX?p=preview
Any idea, thank you all.
You need to use ng-action instead of just action attribute
I found the solution.
Here is the original stackoverflow post: Angular set form action based on variable in scope
basically, i need to use $sce service in my controller in order to have an url in "action" attribute.

How to access inner html element present in actual html via javascript

I need to get the object of second level html element in my page.
<html>
<div id="out">
jasoidjisa
<html>
<head>//This object
<div id="in">
hihisdhi
</div>
</head>
</html>
</div>
<script>
alert(document.getElementsByTagName('html'));
</script>
Help me to access this html element via js
HTML is a reserved tag name and so you can't use it in the manner in which you have used it here. Which particular value from above are you trying to get exactly ? It might make sense to use the <div> tag with a class or I'd to identify it instead. If you specify which value you are specifically looking to get I can write up a theoretical solution.
vsank7787 was totally correct. Maybe you could use iFrames instead of nested html inside a HTML document since html is a reserved keyword.

Why I can't access a form object inside a ngInclude on angularJS?

I have a screen built with a several stacks of ng-includes. The last one, in special, I build the screen based on user configuration.
Sometimes, I have to show a Form in one of this included templates. And when my user click on save button, I have to validate if all fields in the form are valid.
In the meantime, when a try to access form object, to check for $valid, my form is undefined.
After a day fighting against it, I've discovered that ng-include process is not accepting my form object to be created.
I've created this plunker to see if it's really happening on a simple project, making a working form and not working one:
http://plnkr.co/edit/4oMZYLgaYHJPoSZdSctI?p=preview
Basically, created a form, like this, with demanded angular attributes:
<form name="sampleForm">
<input type="text" name="aws" required ng-model="myValue">
<br/>myValue: "{{ myValue }}"
<br/>
<input type="text" name="aws" required ng-model="myValue">
<br/>myValue: "{{ myValue }}"
</form>
And trying to access form object like this:
$scope.sampleForm.aws.$valid
And the result is:
$scope.sampleForm === undefined
Someone know how to solve this problem?
Since ng-include creates a new scope, $scope.sampleForm will be undefined from within the included page.
The solution should be getting the ng-controller="formController" declaration inside of the included HTML page itself, which I think is also a better design, since I can't see a scenario where it's not "controlling" the form.
The other non-included form obviously works as you might expect.
Plunker

How to access an object that is inside two html forms using javascript?

why if this code works:
<form name="form1"><textarea class="xxlarge" id="add_url_desc" name="j_desc" onKeyDown="textCounter(document.form1.j_desc,'job_limit',150)" onKeyUp="textCounter(document.form1.j_desc,'job_limit',150)"></textarea>
why this one dont?:
<form name="general">
<form name="form1"><textarea class="xxlarge" id="add_url_desc" name="j_desc" onKeyDown="textCounter(document.general.form1.j_desc,'job_limit',150)" onKeyUp="textCounter(document.general.form1.j_desc,'job_limit',150)"></textarea>
</form>
Why i cant trigger the onKey action when one form is inside other one??? Thanks!
HTML doesn't allow nested forms.
You just can't nest forms in HTML. It will never work right... not only will javascript break, the browser won't know how to handle the forms either. Sorry.

How can I know the id of a JSF component so I can use in Javascript

Problem: Sometimes you will want to access a component from javascript with
getElementById, but id's are generated dynamically in JSF, so you
need a method of getting an objects id. I answer below on how you can do this.
Original Question:
I want to use some code like below. How can I reference the inputText JSF component in my Javascript?
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<head>
<title>Input Name Page</title>
<script type="javascript" >
function myFunc() {
// how can I get the contents of the inputText component below
alert("Your email address is: " + document.getElementById("emailAddress").value);
}
</script>
</head>
<h:body>
<f:view>
<h:form>
Please enter your email address:<br/>
<h:inputText id="emailAddresses" value="#{emailAddresses.emailAddressesStr}"/>
<h:commandButton onclick="myFunc()" action="results" value="Next"/>
</h:form>
</f:view>
</h:body>
</html>
Update: this post Client Identifiers in JSF2.0 discusses using a technique like:
<script type="javascript" >
function myFunc() {
alert("Your email address is: " + document.getElementById("#{myInptTxtId.clientId}").value);
}
</script>
<h:inputText id="myInptTxtId" value="backingBean.emailAddress"/>
<h:commandButton onclick="myFunc()" action="results" value="Next"/>
Suggesting that the attribute id on the inputText component
creates an object that can be accessed with EL using #{myInptTxtId},
in the above example. The article goes on to state that JSF 2.0 adds
the zero-argument getClientId() method to the UIComponent class.
Thereby allowing the #{myInptTxtId.clientId} construct suggested
above to get the actual generated id of the component.
Though in my tests this doesn't work. Can anyone else confirm/deny.
The answers suggested below suffer from drawback that the above
technique doesn't. So it would be good to know if the above technique
actually works.
You need to use exactly the ID as JSF has assigned in the generated HTML output. Rightclick the page in your webbrowser and choose View Source. That's exactly the HTML code which JS sees (you know, JS runs in webbrowser and intercepts on HTML DOM tree).
Given a
<h:form>
<h:inputText id="emailAddresses" ... />
It'll look something like this:
<form id="j_id0">
<input type="text" id="j_id0:emailAddress" ... />
Where j_id0 is the generated ID of the generated HTML <form> element.
You'd rather give all JSF NamingContainer components a fixed id so that JSF don't autogenerate them. The <h:form> is one of them.
<h:form id="formId">
<h:inputText id="emailAddresses" value="#{emailAddresses.emailAddressesStr}"/>
This way the form won't get an autogenerated ID like j_id0 and the input field will get a fixed ID of formId:emailAddress. You can then just reference it as such in JS.
var input = document.getElementById('formId:emailAddress');
From that point on you can continue using JS code as usual. E.g. getting value via input.value.
See also:
How to select JSF components using jQuery?
Update as per your update: you misunderstood the blog article. The special #{component} reference refers to the current component where the EL expression is been evaluated and this works only inside any of the attributes of the component itself. Whatever you want can also be achieved as follows:
var input = document.getElementById('#{emailAddress.clientId}');
with (note the binding to the view, you should absolutely not bind it to a bean)
<h:inputText binding="#{emailAddress}" />
but that's plain ugly. Better use the following approach wherein you pass the generated HTML DOM element as JavaScript this reference to the function
<h:inputText onclick="show(this)" />
with
function show(input) {
alert(input.value);
}
If you're using jQuery, you can even go a step further by abstracting them using a style class as marker interface
<h:inputText styleClass="someMarkerClass" />
with
$(document).on("click", ".someMarkerClass", function() {
var $input = $(this);
alert($input.val());
});
Answer: So this is the technique I'm happiest with. Doesn't require doing too much weird stuff to figure out the id of a component. Remember the whole point of this is so you can know the id of a component from anywhere on your page, not just from the actual component itself. This is key. I press a button, launch javascript function, and it should be able to access any other component, not just the one that launched it.
This solution doesn't require any 'right-click' and see what the id is. That type of solution is brittle, as the id is dynamically generated and if I change the page I'll have to go through that nonsense each time.
Bind the component to a backing bean.
Reference the bound component wherever you want.
So here is a sample of how that can be done.
Assumptions: I have an *.xhtml page (could be *.jsp) and I have defined a backing bean. I'm also using JSF 2.0.
*.xhtml page
<script>
function myFunc() {
var inputText = document.getElementById("#{backBean.emailAddyInputText.clientId}")
alert("The email address is: " + inputText.value );
}
</script>
<h:inputText binding="#{backBean.emailAddyInputText}"/>
<h:commandButton onclick="myFunc()" action="results" value="Next"/>
BackBean.java
UIInput emailAddyInputText;
Make sure to create your getter/setter for this property too.
Id is dynamically generated, so you should define names for all parent elements to avoid j_id123-like ids.
Note that if you use jQuery to select element - than you should use double slash before colon:
jQuery("my-form-id\\:my-text-input-block\\:my-input-id")
instead of:
jQuery("my-form-id:my-text-input-block:my-input-id")
In case of Richfaces you can use el expression on jsf page:
#{rich:element('native-jsf-input-id')}
to select javascript element, for example:
#{rich:element('native-jsf-input-id')}.value = "Enter something here";
You can view the HTML source when this is generated and see what the id is set to, so you can use that in your JavaScript. As it's in a form it is probably prepending the form id to it.
I know this is not the JSF way but if you want to avoid the ID pain you can set a special CSS class for the selector. Just make sure to use a good name so that when someone reads the class name it is clear that it was used for this purpose.
<h:inputText id="emailAddresses" class="emailAddressesForSelector"...
In your JavaScript:
jQuery('.emailAddressesForSelector');
Of course you would still have to manually manage class name uniqueness.
I do think this is maintainable as long as you do not use this in reusable components. In that case you could generate the class names using a convention.
<h:form id="myform">
<h:inputText id="name" value="#{beanClass.name}"
a:placeholder="Enter Client Title"> </h:inputText>
</h:form>
This is a small example of jsf. Now I will write javascript code to get the value of the above jsf component:
var x = document.getElementById('myform:name').value; //here x will be of string type
var y= parseInt(x,10); //here we converted x into Integer type and can do the
//arithmetic operations as well

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