I’m trying to make a simple inventory systems. But I’m having problem with my oninput event. I want to make TOTAL GOODS to be “Please input number in GOODS IN ” whenever every non number value inserted into GOODS IN. But it seems I can’t make it so. Answer Just add type = “…
Tag: validation
Input field value not recognized unless clicked on ReactJs
I am building a form with react which has three fields: Make, Model and ZipCode. The zipcode field comes with a default value, so when I choose a make and a model and click the submit button, it should pull that make and model in the selected zipcode, however, the zipcode input field will tell me to enter a v…
How to check if content of an html element is empty?
I was building a simple PHP login form that contains both required fields and validation. regardless required fields, I want to display an error message for each input element that had not been filled. But I come across a problem on the way. The span element I use for styling does not disappear when there is …
JavaScript Regex for Path without leading or trailing slashes
I’m struggling to figure out a Regex pattern for JavaScript that will trim a path of it’s preceding and trailing slashes (or hashes/extensions) For example: Should return: I felt like I was getting close with the following, but it only selects text without any slashes, hashes, or periods. I’…
How to check If the value of an input is number or string in react js?
I want to check if the value of a type text input is number or string like this : But when I type text or number it console logs string in both cases . How can I check if the value is number with input type text in react js ? Answer The simplest way will be to convert the
Yup validation: cyclic dependency error with multiple dependent fields
I’m using Yup to validate 3 fields which are all dependent on each other. fieldA, fieldB and fieldC. They are numbers and at least one of them needs to have a value > 0. I’m trying to solve it like this: This worked fine with only 2 fields fieldA and fieldB, where each one only had the other fi…
Validating Vue syntax with W3C Validator
I’m doing this course where I can freely select a framework to build a simple application. However, we are to validate the HTML with the W3C validator. I have no idea how. The W3C validator does not support Vue-specific stuff. Errors such as: Is everywhere. And this is just for one line of code. Am I do…
How do I access another field using vuelidate
I’m making some validators on a form for shipping using vuelidate. Currently I’m checcking if the postalCode is in the right format. This field is dependent on the country field though (because different countries have different postal code formats. I’m having trouble accessing the viewmodel…
React email address format validation
I’m building a portal where students from only 6 universities can participate so I need a way to limit the email address type to these 6 universities for example emails ending with @mit.edu How do I implement this in React with the form validation set to characters and on clicking on of these formats fr…
Insert Only One Record In MYSQL database using php
i am working on a project where i want to insert only one record in a specific time. For Example: in the project client rate a contractor only once.(when the construction is in working) once he rated he cannot rate second time whatsoever. I checked online but didn’t find what i am looking for. Now I hav…