So I have this DOM structure
<body>
<div>
<a></a>
<a></a>
</div>
<div>
<a></a>
</div>
</body>
I can access two first link element by using xpath:
//div/a[1]
//div/a[2]
And I want to access 3rd link by using same xpath structure (to enumerate them all)
//div/a[3]
But this method fails, because link elements have different parent div's
Any way to correct my xpath to access all link elements by it's number?
You can use parenthesis:
(//div/a)[3]
Related
I have a polymer element <my-element> with a computed property myProperty. I need to bind myProperty to another place in the HTML page, so I can't put it inside a dom-bind template
Here's what I mean
<html>
<body>
<div>
<my-element my-property="{{myProperty}}"></my-element>
</div>
<!--somewhere deep inside another part of the document-->
<div>
<h4>myProperty = </h4><span>[[myProperty]]</span>
<div>
</body>
</html>
I cannot wrap my-element and the usage of [[myProperty]] in a dom-bind template as this would result in nearly the entire document being enclosed in this. Attempting to use the bind as it is results in myProperty = [[myProperty]] being displayed, not the value of [[myProperty]].
Is there some way to have behaviour similar to data binding but usable across the whole HTML document? (In the future there might also be a case where [[myProperty]] is used inside an attribute such as <my-second-element my-property="[[myProperty]]">). Or if both occurences are wrapped individually in dom-bind templates is there some way to make the bind global?
Thanks in advance
Not sure why you wouldn't be able to do like this:
<head>
...
<script src="bower_components/webcomponentsjs/webcomponents-lite.js"></script>
...
</head>
<html>
<body>
<template is="dom-bind" id="app">
<div>
<my-element my-property="{{myProperty}}"></my-element>
</div>
<!--somewhere deep inside another part of the document-->
<div>
<h4>myProperty = </h4><span>[[myProperty]]</span>
<div>
</template>
</body>
</html>
This is totally doable. If myProperty changes inside my-element it would also change in "this" html-document. There also wouldn't be a problem adding your second element:
<my-second-element my-property="[[myProperty]]">
Unless you're missing to tell us some specific behavior that you want, this should be what you want. :)
I want to create twitter bootstrap compliant form. According to the docs for Twitter Bootstrap v2.2.2 (the version included with web2py) the html should look like:
<form class="form-horizontal">
<div class="control-group">
<label class="control-label" for="inputEmail">Email</label>
<div class="controls">
<input type="text" id="inputEmail" placeholder="Email">
</div>
</div>
...
I'm currently using SQLFORM which outputs html that doesn't really fit with this (even using formstyle='divs'). Besides I want my html output to be clean without web2py artifacts such as class="w2p_fl". So my thought is to use a custom form. However in doing this there would be a lot of repeated code. That is, the following would basically need to be repeated for each field.
{{=form.custom.begin}}
<div class="control-group">
{{=LABEL(form.custom.label['myfield'], _class='control-label',
_for='mytable_myfield')}}
<div class="controls">{{=form.custom.widget.myfield}}</div>
</div>
...
{{=form.custom.end}}
So how can I repeat the above unit of code so I could replace it with something like {{=bootstrap_field(db.mytable.myfield)}} or some other way to adhere to DRY?
What is the web2py way to do this? Create a view function? Pass a function in the dictionary returned by the controller? Create my own html helper? Create my own widget? Another way?
If you're using Bootstrap 2, you can just do:
form = SQLFORM(..., formstyle='bootstrap')
For Bootstrap 3 (or any other custom formstyle you'd like to create), the formstyle argument can be a function (or other callable) that produces the form DOM. The function will be passed the form and a fields object, which is a list of tuples, with each tuple containing a CSS id, label, input element, and (possibly empty) comment/help text. To get an idea of what such a function should look like, check out the one used for Bootstrap 2 forms.
I have a certain element that I can select with Selenium 1.
Unfortunately I need to click the parent element to get the desired behaviour. The element I can easily locate has attribute unselectable, making it dead for clicking. How do I navigate upwards with XPath?
There are a couple of options there. The sample code is in Java, but a port to other languages should be straightforward.
Java:
WebElement myElement = driver.findElement(By.id("myDiv"));
WebElement parent = (WebElement) ((JavascriptExecutor) driver).executeScript(
"return arguments[0].parentNode;", myElement);
XPath:
WebElement myElement = driver.findElement(By.id("myDiv"));
WebElement parent = myElement.findElement(By.xpath("./.."));
Obtaining the driver from the WebElement
Note: As you can see, for the JavaScript version you'll need the driver. If you don't have direct access to it, you can retrieve it from the WebElement using:
WebDriver driver = ((WrapsDriver) myElement).getWrappedDriver();
Little more about XPath axes
Lets say we have below HTML structure:
<div class="third_level_ancestor">
<nav class="second_level_ancestor">
<div class="parent">
<span>Child</span>
</div>
</nav>
</div>
//span/parent::* - returns any element which is direct parent.
In this case output is <div class="parent">
//span/parent::div[#class="parent"] - returns parent element only of exact node type and only if specified predicate is True.
Output: <div class="parent">
//span/ancestor::* - returns all ancestors (including parent).
Output: <div class="parent">, <nav class="second_level_ancestor">, <div class="third_level_ancestor">...
//span/ancestor-or-self::* - returns all ancestors and current element itself.
Output: <span>Child</span>, <div class="parent">, <nav class="second_level_ancestor">, <div class="third_level_ancestor">...
//span/ancestor::div[2] - returns second ancestor (starting from parent) of type div.
Output: <div class="third_level_ancestor">
Let's consider your DOM as
<a>
<!-- some other icons and texts -->
<span>Close</span>
</a>
Now that you need to select parent tag 'a' based on <span> text, then use
driver.findElement(By.xpath("//a[.//span[text()='Close']]"));
Explanation: Select the node based on its child node's value
Take a look at the possible XPath axes, you are probably looking for parent. Depending on how you are finding the first element, you could just adjust the xpath for that.
Alternatively you can try the double-dot syntax, .. which selects the parent of the current node.
This might be useful for someone else:
Using this sample html
<div class="ParentDiv">
<label for="label">labelName</label>
<input type="button" value="elementToSelect">
</div>
<div class="DontSelect">
<label for="animal">pig</label>
<input type="button" value="elementToSelect">
</div>
If for example, I want to select an element in the same section (e.g div) as a label, you can use this
//label[contains(., 'labelName')]/parent::*//input[#value='elementToSelect']
This just means, look for a label (it could anything like a, h2) called labelName. Navigate to the parent of that label (i.e. div class="ParentDiv"). Search within the descendants of that parent to find any child element with the value of elementToSelect. With this, it will not select the second elementToSelect with DontSelect div as parent.
The trick is that you can reduce search areas for an element by navigating to the parent first and then searching descendant of that parent for the element you need.
Other Syntax like following-sibling::h2 can also be used in some cases. This means the sibling following element h2. This will work for elements at the same level, having the same parent.
We can select the parent tag with the help of Selenium as follows:
driver.findElement(By.xpath("//table[#id='abc']//div/nobr[.='abc']/../.."));
this will help you to find the grandparent of the known Element. Just Remove one (/..) to find the immediate Parent Element.
Like:
driver.findElement(By.xpath("//table[#id='abc']//div/nobr[.='abc']/..));
There are some other ways to implement this, but it worked fine for me.
You can do this by using /parent::node() in the xpath. Simply append /parent::node() to the child elements xpath.
For example:
Let xpath of child element is childElementXpath.
Then xpath of its immediate ancestor would be childElementXpath/parent::node().
Xpath of its next ancestor would be childElementXpath/parent::node()/parent::node()
and so on..
Also, you can navigate to an ancestor of an element using
'childElementXpath/ancestor::*[#attr="attr_value"]'. This would be useful when you have a known child element which is unique but has a parent element which cannot be uniquely identified.
Have once way you don't need to execute script and you still get the parent element:
// identify element
WebElement ele =driver.findElement(By.xpath("//*[#id=\"ext-gen6\"]/div[5]/"));
//identify parent element with ./.. expression in xpath
WebElement parent = ele.findElement(By.xpath("./.."));
The key word here is xpath "./.."
I've got a page where messages and associated elements (responses, forwards, etc) all share a class based on the database id of the parent.
For example
<pre>
<div id="recentMessages">
<div id="a3" class="message a3">this is a message</div>
<div id="a5" class="message a5">this is another message</div>
</div>
<div id="recentComments">
<div id="a3" class="comment a3">this is a comment</div>
<div id="a5" class="comment a5">this is another comment</div>
</div>
<div id="recentActions">
<div id="a3" class="action a3">tim posted a new message</div>
<div id="a4" class="action a4">sara forwarded a message to john</div>
</div>
</pre>
at times I need to remove all elements with the same id, so I originally had
jQuery('div#'+id).remove();
but that would sometimes not remove all the ids because ids are supposed to be unique.
So I added the id as a class. now I use
jQuery('div.'+id).remove();
but this seems to be about 80% effective, and sometimes the divs aren't being removed.
I'm not sure if the issue is because the div has more than one class, but I need the classes because that is how I refer to the elements when somebody clicks.
For instance,
jQuery('div.message').click(function(){
get the id, send it to the server and get the message
});
is there something wrong I'm doing here? or is there a better way to do this?
Looks like this was an issue where a function was being called using a variable which had already been defined. I didn't realize this would cause a problem.
For instance:
jQuery('div','div#recentActions').click(function(){
var removeId=jQuery(this).attr('id').replace('','a');
removeDiv(removeId);
});
function removeDiv(removeId){
jQuery('div#a'+removeId).remove();
}
I can't say for sure this was the issue, but changing the function to:
function removeDiv(cancelId){
jQuery('div#a'+canceld).remove();
}
seems to be working.
I have this html:
<div id="top">
<div id="potato"></div>
</div>
<div id="bottom">
<div id="potato"></div>
</div>
I am trying to use JQuery to access the bottom potato div, and none of the following work.
$('#top #potato').html('Russet');
$('#bottom #potato').html('Red');
$('#top > #potato').html('Russet');
$('#bottom > #potato').html('Red');
$('#potato').html('Idaho');
All of these just modify the top div and not the bottom one. How do I modify the bottom div?
All elements must have unique IDs, in this case you may use the class attribute, so that you have
<div class="potato" />
Which you may access like this:
$('#bottom > .potato').html('Idaho');
I just ran into this problem. Although it's true you shouldn't have two items with the same ID, it happens.
To get the div you want, this is what works for me:
$('#bottom').find('#potato');
For one thing you can not have an element that has the same id as another. Id is unique, but class names can be used as many times as you want
<div id="top">
<div id="potato1"></div>
</div>
<div id="bottom">
<div id="potato2"></div>
</div>
jquery as so:
$(function{
$("#potato2").html('Idaho'); //if you're going to name it with an id,
// that's all the selector you need
});
What you posted and said doesn't work seems to work to me.
$('#top #potato').addClass('Russet');
$('#bottom #potato').addClass('Red');
https://jsfiddle.net/wzezr706/
no need to put classes on everything, but you should have unique id's for everything. That aside, try this:
$("#bottom + div").html('Idaho');
Try this:
$("#bottom #potato").html('Idaho');
Or
$("#bottom #potato:last").html('Idaho');
your HTML is not valid, since you have non-unique ids