Object.seal() JavaScript
The JavaScript Object seal() method prevents any new properties from being added and marks all existing properties as non-configurable. Syntax: Object.seal(object) Parameters: seal: It represents the object which has to be sealed. Return: Sealed Object. Example: <!DOCTYPE html> <html> <body> <script> const a = { prop: ‘HELLO’}; const b = Object.seal(a); b.prop = ‘WORLD’; document.write(b.prop); … Read more