What is the best way to validate Object type props in VueJS to guarantee that certain fields are defined within the object?
For instance, I need to make sure that the user prop includes 'name', 'birthDate', and other specific fields.
Appreciate any assistance in advance.
You have the ability to create a custom validator function for objects:
Visit this link for more information on Prop Validation in Vue.js
props: {
propF: {
validator: function (value) {
return value > 10
}
}
}
The validator function should return true if all fields are present.
For an example, check out this JSFiddle demo: JSFiddle Demo
<div id="app">
<child :myprop="myObj"></child>
</div>
Vue.component('child', {
template: `<span>{{ myprop.id }} {{ myprop.name }}</span>`,
props: {
myprop: {
validator: function(obj) {
return (obj.id && Number.isInteger(obj.id) && obj.name && obj.name.length );
}
}
}
});
new Vue({
el: '#app',
data: {
myObj: {
id: 10,
name: 'Joe'
}
}
});
If the validator fails, you will see a Vue warn in the browser console.
Another way to tackle this is by utilizing javascript constructor functions, as demonstrated in this specific example.
This method involves using the constructor function Person() for type checking, potentially leading to more organized and concise code.
It's important to note that otherObj fails the type check (as indicated by the console warning) because it doesn't adhere to the constructor function requirement. This approach enforces the use of constructor functions over plain objects.
You can learn more about this technique in the vue2-docs and vue3-docs.
Here is a sample validation function I created for handling display delay properties in milliseconds for an item that toggles visibility on and off the screen. The property can be either a number representing both the show and hide delays, or it can be an object defining separate delays for each case.
To ensure the correct data type, I validate each expected key to match the type 'number'. If a key is missing, its type will default to 'undefined'. Additionally, negative values are not permissible in this scenario.
props: {
delay: {
type: [Number, Object],
default: 0,
validator(value) {
if (typeof value === 'number') {
return value >= 0;
} else if (value !== null && typeof value === 'object') {
return typeof value.show === 'number' &&
typeof value.hide === 'number' &&
value.show >= 0 &&
value.hide >= 0;
}
return false;
}
},
}
Need assistance with generating reports using a html screenshot in Protractor. I have followed all the necessary steps but encountered an error. Any help would be appreciated. Here is my conf.js: // Sample configuration file. var HtmlReporter = require(& ...
I am looking to incorporate a real-time COVID-19 total cases tracker for Russia on my website. In order to achieve this, I am sending a request to using the following script: function httpGet(theUrl) { var xmlHttp = new XMLHttpRequest(); xmlHttp.o ...
I'm trying to figure out how to handle a specific task, but I'm running into some obstacles. When adding numbers to clusters, a number is considered to belong to a cluster if its distance to at least one existing number in the cluster is within a ...
I'm facing a challenge with integrating dynamically added elements and a populated drop down on my form. Is there a way to combine the two seamlessly? Below is the code snippet I'm using for dynamically adding and removing elements: $(docu ...
Our tool development heavily relies on regex for various functionalities. One key aspect involves replacing placeholders with actual values dynamically using standard JavaScript's `RegExp`. All placeholder formats are similar to this: {{key}} In mo ...
During development, I encountered an issue with my code that uploads images to a server folder and stores references in a mysql database. When transitioning to production, the images became undefined, resulting in 404 errors. I came across the VUE Static ...
So here's the issue I'm encountering. Let's consider the following scenario: let surfaces: Map<any, any> = new Map([{"83.1" => Object}, {"84.1" => Object}]) let arr1 = ["83.1"] This is the desired o ...
Upon removing the CSP policy from the backend in Node.js, everything functions correctly. However, enabling it results in a break in the JavaScript code. To investigate further, I analyzed the request headers of the AJAX requests made by my JS files. Two ...
var header = $("#accordion"); $.each(data, function () { header.append("<a id='Headanchor' href='javascript:toggleDiv($(this));'>" + this.LongName + "</a>" + "<br />", "&l ...
When using AJAX to fetch data from a database and display it in a text box, most examples found online only show how to display the AJAX response in one text box. But what if we need to separate multiple PHP variables retrieved from the AJAX response and d ...
I am utilizing a ref value in order to only trigger a click event when the ref value is changing. For instance, if I need to update/delete the array inside let myRef = ref([]);, should I simply access the proxy and carry out the operations like this : sel ...
I'm working with a custom component in app.js return ( {cards.map((index) => { return <Card key={index} /> ) Within the Card component, I assigned a specific className return ( <ListItem id="root" className="find-card"&g ...
Looking for a simple solution to merge, flatten, and concatenate multiple multi-dimensional arrays in JavaScript in a specific manner (from right to left) # Example [['.class1', '.class2'], ['.class3', ['.class4', & ...
In Vue.js, I have developed a 'mini-game' that allows players to 'fight'. After someone 'dies', the game declares the winner and prompts if you want to play again. However, I am facing an issue where resetting the health of bo ...
Being fairly new to the world of AngularJS, I suspect that I am just making a simple mistake. My goal is to splice the cardTypes array at the var newCard = cardTypes.shift(); line rather than using .shift() so that I can consider my ng-repeat index. Whil ...
I don't have much experience with CSS, but I'm really eager to customize the appearance of my chart. The chart is generated by a vue.js library and comes with pre-defined CSS classes. However, I'm uncertain about how to access and modify the ...
Due to the inability to run server-side code, I am limited in implementing a PHP session for a registration form. Instead, I have opted to utilize a client cookie to ensure that each person can only register once with a unique email address. After reading ...
Incorporating AngularJS and Bootstrap 3 into my web app, there is an "Update" button that saves user changes. Upon clicking the "Update" button, I aim to trigger and display bootstrap's alert box with the message "Information has been saved," followed ...
I have forms that allow file uploads (images), and I am trying to restrict the size of those images to 500KB. However, for some reason, the forms are not submitting and I am unsure why. Below is the jQuery code: $('form').on('submit', ...
Within my nextjs project, I have declared variables in both the .env and next.conf.js files. The code snippet from the next.conf.js file looks like this: module.exports = { env: { NEXT_PUBLIC_JWT_SECRET: "...", }, publicRuntimeConfig: { ...