UseLessJs is a library with some special HTML Elements to make common operations easy. The elements will help to reduce JavaScript code.
To implement UseLessJs to you project you need to link your script tag as module type. An example bellow :
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>How to implement</title>
</head>
<body>
<!-- Other tags -->
<script src="/lib/useless.js" type="module"></script>
</body>
</html>This element helps you to submit form data to backend without refresh and JavaScript. This only support GET & POST Requests. Here an example below :
<!-- You need to wrap your form with the element -->
<form-submit url="http://localhost:9000/test-submit" method="get" response="myfunc">
<form>
<input type="email" name="email"/>
<input type="password" name="password"/>
<button>Submit</button>
</form>
</form-submit>
<script>
function myfunc(response){
console.log(response); // You can get response from server with callback function.
}
</script>This element helps you to fetch data like posts from backend server without any JavaScript.
<!-- You need to wrap your item with the element -->
<fetch-data src="https://api.thecatapi.com/v1/images/search?limit=4&breed_ids=beng&api_key=REPLACE_ME">
<div class="post">
<img src="{url}" width="100" height="100">
<h3>{id}</h3>
</div>
</fetch-data>
<!-- use {property_name} literal to show the JSON object property -->If you need to send data on button click this element will help you to do it without JavaScript. An example below:
<!-- You need to wrap your button with the element -->
<send-data url="http://localhost:9000/test-submit" method="post" data-user="1" response="myfunc">
<button>Send Data</button>
</send-data>You can create counter without any JavaScript. An Example :
<count-num initial="0">
<div>{value}</div>
<button data-action="+" data-by="1">Increament ({value})</button>
<button data-action="-" data-by="1">Decreament ({value})</button>
</count-num>To validate your input data you can use the this element. You can validate input value with Regular Expressions. An Example below :
<!-- Wrap your input tag with the element, the valid/invalid attribute use to add class by valid/invalid data. -->
<input-validate valid="valid" invalid="invalid" regex="^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$">
<input type="text" placeholder="Enter something...."/>
</input-validate>To load script file after page load this element helps you. It's possible to set a delay to load the script on document.
<!-- Simply set your src to load js. And set after attribute to specify delay -->
<load-script after="5000" src="/path/to/script.js"></load-script>