This library was created to address client side validations that needs also an AJAX server response to verify an input constraint.
Consider a case of a registration form where a user needs to fill out his personal details while also choosing a username.
For data integrity- all input constraints are validated on the server side upon data submission.
For user experience- it is also worthy to validate all input constraints on the client side as the user interacts with your application.
Some constraints, such as "existing user" or "valid location", need to be validated at the background, and this is where this library plays well. It is also especially useful for SPAs.
Sync rules return with stateEnum.invalid or stateEnum.valid
Asyc rules return with stateEnum.pending, and also call a callback with stateEnum.invalid or stateEnum.valid when ready.
Either edit the UI through a CSS rule for .vivalid-error , or gain complete control by passing a callback that will be called with a DOM element, validation message, and validation state.
Use this library with full javascript interface, or the data attributes html interface (with js to only define callbacks).
No validator rules are included. Write your own, or also choose to include common ones from https://github.com/pazams/vivalid-rules-core
see here
npm install vivalidnpm install vivalid-rules-corebower install vivalidbower install vivalid-rules-coreSee js documentation
See js documentation, plus a short example (live here):
index.html
<!DOCTYPE html>
<html>
<head>
<script src="https://rawgit.com/pazams/vivalid/master/dist/vivalid-bundle.js"></script>
<script src="https://rawgit.com/pazams/vivalid-rules-core/master/dist/vivalid-rules-core-bundle.min.js"></script>
<script src="script.js"></script>
</head>
<body>
<!-- inline css styles to make the exmaple work as a standalone without a css file -->
<h1>Html data attributes interface</h1>
<form id="MainForm" data-vivalid-group data-vivalid-on-validation='["onValidationSuccess", "onValidationFailure"]' data-vivalid-pending-ui='["pendingUiStart", "pendingUiStop"]'>
<div>
<input type="text" placeholder="First Name" data-vivalid-tuples='[["required",{}],["betweenlength",{"min": 4, "max": 10}]]' />
</div>
<div style="position: relative;">
<input type="text" placeholder="User Name (type 'bob' and press send)"
data-vivalid-tuples='[["required",{}],["exisitingUserBob",{}]]'
data-vivalid-result='onInputValidationResult'
/>
<div class="js-message" style="background-color: blue; color: white; display: none; position: absolute; z-index: 1; padding: 6px; left: 122px; top: 0;">
</div>
</div>
<div>
<input id="SendButton" type="button" value="send" data-vivalid-submit />
</div>
<div id="MessageLogs">
</div>
</form>
</body>
</html>
script.js
var addValidatorBuilder = vivalid.validatorRepo.addBuilder;
var addCallback = vivalid.htmlInterface.addCallback;
var initAll = vivalid.htmlInterface.initAll;
function messageLog(message){
var log = document.getElementById('MessageLogs');
log.innerHTML = log.innerHTML +'<br/>' + message;
}
addValidatorBuilder('exisitingUserBob', function(ValidationState, stateEnum, options) {
return function(value, callback) {
var msg = 'user bob exists';
setTimeout(dummyServiceCall, 3000);
return new ValidationState('', stateEnum.pending);
function dummyServiceCall() {
if (value.indexOf('bob') !== -1) {
callback(new ValidationState(msg, stateEnum.invalid));
} else {
callback(new ValidationState('', stateEnum.valid));
}
}
};
});
addCallback('onValidationSuccess', function() {
messageLog('HOORAY!!!! input group is valid and form will submit');
});
addCallback('onValidationFailure', function(invalid, pending, valid) {
messageLog('input group is invalid!: ' + invalid + ' invalid, ' + pending + ' pending, and ' + valid + ' valid ');
});
addCallback('pendingUiStart', function(inputElems, submitElems) {
messageLog('pendingUiStart');
inputElems.forEach(function(input) {
input.disabled = true;
});
submitElems.forEach(function(submit) {
submit.disabled = true;
});
this.style.backgroundColor = 'green';
});
addCallback('pendingUiStop', function(inputElems, submitElems) {
messageLog('pendingUiStop');
inputElems.forEach(function(input) {
input.disabled = false;
});
submitElems.forEach(function(submit) {
submit.disabled = false;
});
this.style.backgroundColor = 'blue';
});
// show casing a callback for custom UI
addCallback('onInputValidationResult', function(el, validationsResult, validatorName, stateEnum) {
var msgEl = el.parentNode.querySelector('.js-message');
var displayEl = msgEl;
if (validationsResult.stateEnum === stateEnum.invalid) {
displayEl.style.display = 'block';
msgEl.innerHTML = validationsResult.message;
} else {
displayEl.style.display = 'none';
msgEl.innerHTML = '';
}
});
initAll();
Coming soon
FAQs
client side validations with async (client-server) support. http://www.pazams.com/vivalid/
The npm package vivalid receives a total of 0 weekly downloads. As such, vivalid popularity was classified as not popular.
We found that vivalid demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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