data-validation | Efficient and Easy Data Validation with Cats | Validation library

I am trying to send an email from a webpage but when i click on the submit button php code is opening. I have installed apache server and its up and running. I am not quite sure what i am missing and how to send an email from webpage. do i need to install sendmail and php also to make it work in local using apache server. below is my code. please help

I am adding a HTML Form to my index page, that will add the user input to a MariaDB/MySQL database table: mailList. I'm using PHP to write the data to the table, and JQuery to do ensure the user is not redirected after submission.

My Issue is that the database is not updating. If the user is on Google Chrome/Safari - the JQuery will say it has been successfully submitted, but the database is not updated.

Firefox gives the correct error and states that there was an issue.

My HTML & JQuery is working perfectly, but I think I my problem is in my PHP code:

Use existing data in Firebase Security Rules:

When writing data, you may want to compare incoming data to existing data. This lets you do things like ensure a field hasn't changed, that a field has only incremented by one, or that the new value is at least a week in the future. In this case, if your ruleset allows the pending write, the request.resource variable contains the future state of the document. For update operations that only modify a subset of the document fields, the request.resource variable will contain the pending document state after the operation. You can check the field values in request.resource to prevent unwanted or inconsistent data updates:

I don't understand the meaning of "pending" and "pending write" in the above explanation. I can't imagine it.

Is it possible to suspend writes by security rules?

After the 'update operation' is done, the document is updated, so I don't know what the word "pending document state" means.

Once a user submits their form, I want to use JQuery/AJAX to stop the page from redirecting/reloading.

But what is happening, is the user data is refreshed and displayed in the URL - even though I am using the POST method!

I have 2 forms on my landing.html page, but I'll just give the coding for 1 of them:

It seems my problem is here somewhere in my contactForm.js:

I'd like to enable/disable buttons on key up change conditionally based on a custom data attribute that matches between an input and a button. I've solved it with just one input, but it seems that when I add another one in the mix, the buttons don't seem to enable. Furthermore, I have a hunch that it's because of .each() but I can't put my finger on it.

Here's the CodePen I've tried and failed on

I recently created an automated Excel utility (using Microsoft Office 2019), in which I've extensively used data validations, VBA code, named ranges and formatting. It was working well until one day I received an Excel prompt message that read:

When I click on Yes, it gives me another pop-up where it says it recovered the file, and also gives me a link to the error log XML file. I click on it and open the .xml file using my default browser, and it shows the following details:

Looks like it is removing data validations from a particular sheet, and I realize that is true when I navigate to that sheet in the UI. To work around this unwarranted and repeated data-validation removal that Excel application is enforcing, I created a macro code that will re-instate all these data validations as required. The real problem arises when this Excel file is opened on a different computer with Microsoft Office 365. Looks like it is removing not just data-validations but also other components like named ranges and buttons. There could be other things that it might be removing, which I am unaware of at the moment. So the macro created to re-instate the data-validations is no longer useful.

Why does this problem arise? And why is different version of Excel behaving differently? How do I solve this? Appreciate your kind help. Thank you!

I create a Contact page with the help formik library. I set my fields in Field.js required="required" but now they are not working. They were working as required field before I added onBlur and onChange events. help me to fix how to set field as required. I don't know where I m missing . Here is my Field.js:

I was trying to enhance the following example to support the dropdown values in the angular material table when the dataset is copy-pasted from excel.

If Copy/paste doesn't work is there any way I can import the excel which carries my dropdown data?

There are two ways we can add a data list in excel:

1. Using the reference range

2. Typing source in the data-validation itself.

I do have the following example in stackblitz which works with normal copy-paste data.

https://stackblitz.com/edit/angular-copy-paste-table-from-excel

I am looking for help that how I can enhance this program to support the dropdown copy paste from excel to the angular material table.

How I can pass dropdown values to the angular material table?

Expected Result:

When copied all datasets given in the below picture, the angular material table should create test1 first value as a dropdown and test2 as a normal dataset.

I got one solution to make column values to dropdown but I am still looking for solutions to create a dropdown list directly from the range given in the excel.

I'm using Google Spreadsheets with Google Apps Script and I want to get the value of the edited cell which has a drop down list. I debugged using onEdit(e) and message box and e.range.value.