Web developer specializing in React, Vue, and front end development.
To generate random SHA1 hash to use as ID in Node.js, we use the crypto.randomBytes method.
For instance, we write
const id = crypto.randomBytes(20).toString("hex");
to call randomBytes to create a byte object with 20 bytes.
Then we call toString on it with 'hex' to convert it to a hex string.
To set HTML5 required attribute in JavaScript, we set the required property.
For instance, we write
document.getElementById("edName").required = true;
to select the input with getElementById.
And then we set its required property to true to make it a required input.
To disable a href link in CSS, we set the pointer-event property.
For instance, we write
a {
pointer-events: none;
}
to disable links by setting pointer-events to none.
To target an elements parent element using event.target with JavaScript, we use the parentNode property.
For instance, we write
const handleEvent = (e) => {
const parent = e.currentTarget.parentNode;
};
to define the handleEvent function.
It it, we get the current element that triggered the event with e.currentTarget.
And we get its parent node with the parentNode property.
To make a non-cached request with fetch and JavaScript, we set the cache option.
For instance, we write
const res = await fetch("some.json", { cache: "no-store" });
to call fetch to make a request to get some.json with a get request.
We set cache to 'no-store' to bypass the cache and get the latest version of some.json.