Puppeteer loop through elements

Looping and iteration features help you write more succinct code, and use data more effectively. When a lambda requires extra information, pass it to a function that provides the information and to evaluate the code, possibly multiple times. This differs from some other languages where looping constructs are special keywords. In the Puppet code, they're functions.

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Hashes preserve the order in which their keys and values were written. When interpolating a hash into a string, the resulting string is also constructed in the same order. For information about the syntax of function calls, see the functions documentation, or the lambdas documentation for information about the syntax of code blocks that you pass to functions.

The block of code doing the work was separated from the place where you used it, which makes a simple task complicated. Every type of thing to iterate over would require its own one-off defined type. The current Puppet style of iteration is much improved, but you might encounter code that uses this old style, and might have to use it to target older versions of Puppet. Welcome to Puppet documentation Puppet 5 Platform Quick start guides Deprecated features Installing and upgrading Configuration Important directories and files Environments Modules Puppet services and tools Puppet Server The Puppet language Visual index Basics The Puppet language style guide Handling file paths on Windows Variables Resources Resources advanced Relationships and ordering Classes Defined resource types Bolt tasks Type aliases Expressions and operators Conditional statements and expressions Function calls Docs for built-in functions Node definitions Comments Facts and built-in variables Reserved words and acceptable names Writing functions Puppet language Custom types Provider development Values and data types Templates Advanced constructs Iteration and loops Lambdas Resource default statements Resource collectors Virtual resources Exported resources Tags Run stages.

Iteration and loops Open Source Puppet — 5.

puppeteer loop through elements

These functions accept a block of code and run it in a specific way: each - Repeats a block of code a number of times, using a collection of values to provide different parameters each time. The focus of the Puppet language is declaring resources, so most people want to use iteration to declare many similar resources at once.

Jdrama download to the declaring resources example, include an unique defined resource type in the symlink.

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puppeteer loop through elements

Puppet sites use proprietary and third-party cookies.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Already on GitHub? Sign in to your account. It does AJAX. Kunal clicking all of them is quite easy:. You should also install a listener on 'response' event to track the responses for these AJAX requests:. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up.

puppeteer loop through elements

New issue. Jump to bottom. Copy link Quote reply. All these have same class name but different onclick event data. This comment has been minimized.

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Linked pull requests. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window.Looping and iteration features help you write more succinct code, and use data more effectively. When a lambda requires extra information, pass it to a function that provides the information and to evaluate the code, possibly multiple times.

This differs from some other languages where looping constructs are special keywords. In the Puppet code, they're functions. Hashes preserve the order in which their keys and values were written. When interpolating a hash into a string, the resulting string is also constructed in the same order. For information about the syntax of function calls, see the functions documentation, or the lambdas documentation for information about the syntax of code blocks that you pass to functions.

The block of code doing the work was separated from the place where you used it, which makes a simple task complicated. Every type of thing to iterate over would require its own one-off defined type. The current Puppet style of iteration is much improved, but you might encounter code that uses this old style, and might have to use it to target older versions of Puppet. Welcome to Puppet 6. Iteration and loops Open Source Puppet — 6. These functions accept a block of code and run it in a specific way: each - Repeats a block of code a number of times, using a collection of values to provide different parameters each time.

The eachfilterand map functions accept a lambda with either one or two parameters. The focus of the Puppet language is declaring resources, so most people want to use iteration to declare many similar resources at the same time.

Similar to the declaring resources example, include an unique defined resource type in the symlink. How helpful was this page? Puppet sites use proprietary and third-party cookies.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub?

puppeteer loop through elements

Sign in to your account. What steps will reproduce the problem? I have a grid, with several rows and columns. My action creates a new entry into the grid and I would like to validate the same. In order to do that, I am trying to use page. I would do this in a simpler way if xpath was available. I am getting all elements using the below. What is the expected result? What happens instead? Entire JSHandle node info is getting displayed when I console.

I'll admit it is a bit verbose:.

JoelEinbinder thanks for your suggestion. Answer by ukrexpo More understandable, natural, more Front-End :. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. New issue. Jump to bottom. How to get the inner text of elements from the return values of page. Copy link Quote reply.

Steps to reproduce Tell us about your environment: Puppeteer version: 0. Is the above, right way to get info of each node? Could you suggest what is the best way to get text? Also, how can I get the class name? This comment has been minimized. Sign in to view. I did try this as well. It says data1 is "undefined". ElementHandle instances can be passed as arguments to the page. Sign up for free to join this conversation on GitHub.

Already have an account? Sign in to comment.Any help appreciated. Depending on how the spans are organised on the page, you may not even need to use multiple classes. A single identifier or class on a common parent is the best way, so that from there you can get all the spans. Are you using a pre-existing code library on the page, such as jQuery, or will you want to use native-JavaScripting techniques.

How can I loop through all of the spans and call my ajax function foreach with the span name info, and then update the contents of each span with the result? I should be ok with the ajax side etc…. You would use getElementsByClassName to retrieve an array-like object that consists of the matching elements, and then a simple for loop to loop through each of them. You can give the ajax request a callback function that updates the content after it has been successfully received. At which point, your code can then use document.

My sample code goes before any of your code. The purpose of that sample code is to be compatability code, to check if the web browser has a built-in getElementsByClassName method, and if not to let the browser know how to do it.

Many thanks. I had it working when the script2. That we can figure out by taking a look at the resulting HTML code that is served up to the web page. Not a showstopper or anything, but why not save time when you can :.

Web automation with JavaScript for beginners - Puppeteer

Loop through all spans JavaScript. Can you provide some info about how the spans are organised? Can you put my example code into your explanation? I also tried this but didnt work: window.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project?

Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. I'd love to be able to iterate over multiple elementHandle s, but cannot fathom how to do so.

Are there any plans to extend selector evaluation functionality so that we can iterate over results? As a workaround, but I cannot find a way to convert the items in divs into elementHandlesand can't do elementHandle.

This is similar to I'd also would love to have page. So for your example, you can do all the work you need on the element inside the evaluate context and return the result to your script:.

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Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. New issue. Jump to bottom. Copy link Quote reply. Hello there, I'd love to be able to iterate over multiple elementHandle s, but cannot fathom how to do so. This comment has been minimized.

Sign in to view. I'm using this solution it's not elegant, it's not fast, it left a dirty custom attribute on DOM, but allow to use ElementHandle as page. Update on iterating over page. Sign up for free to join this conversation on GitHub.

Already have an account? Sign in to comment. Linked pull requests. You signed in with another tab or window.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. Hi, I think this is an obvious question but still I cannot figure out how to grab text from an element.

Seems like Babel issue. Do you transpile? It has not array methods like. So we need to make an array from it. We do this with spreading NodeList iterable into an array. Without spreading, we have an array with just one element - NodeList collection, It has not innerText property, so.

I've been struggling for like 3 weeks trying to figure out how to scrape innerText from multiple elements. I must have totally overlooked the map in their function. I built a script off that code and I then tried to modify the code to extract multiple paragraphs off a wordpress site, but the arrays always came back empty or undefined or I had unresolved promise errors. I am really new to JS and have been learning as I play with puppeteer.

I kept creating arrays from page. This was so helpful!!! I'm gonna go review how map works, and see if I can find more info about the returned nodeList is that an object? I just wanted to say thank you!!! I'm wondering if a lot of people have had this problem like me and the OP. I installed puppeteer on an ubuntu VM and the example above that scrapes example. So I figured some of my issues were with my setup.

I'm not very good at debugging JS yet other than spitting out variables in console. I assumed I would just get an array with each element as an index of the array. But alas, even though I was working from most of this code since the beginning, I guess I never scrolled down in this post far enough to see you guys discussing multiple elements!! I guess I just assumed if I just created an array and used the same code as when I extracted a single element from example.

I couldn't figure out where I went wrong!! I am so excited I found this!!!! Immediately my script that was testing out pulling an array of elements started working after adding. I'm glad I kept working at it and didn't try to go do scraping with Python instead. Thank you x You guys are amazing.

KSmith0x86 Thank you for kind words! You can read more about Array. Also, it would be useful to read about JSON. I tried elementHandle. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up.


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