Merge pull request #328 from biswajitdas-007/javascript

String methods added

languages/javascript.js

@@ -28,8 +28,6 @@ Object.preventExtensions(obj)                        // Prevents any extensions
 Object.seal(obj)                                     // Prevents other code from deleting properties of an object.
 Object.setPrototypeOf(obj, prototype)                // Sets the prototype (i.e., the internal [[Prototype]] property).
 Object.values(obj)                                   // Returns an array containing the values that correspond to all of a given object's own enumerable string properties.
-Object.hasOwn(obj, prop)                             // Checks if a object has a property of its own (not inherited).
-Object.fromEntries(iterable)                         // Transforms a list of key values pairs into a onject.
 
 // Object instances and Object prototype object (Object.prototype.property or Object.prototype.method())
 // Properties
@@ -57,8 +55,6 @@ Array.prototype                                      // Represents the prototype
 Array.from(arrayLike[, mapFn[, thisArg]])            // Creates a new Array instance from an array-like or iterable object.
 Array.isArray(obj)                                   // Returns true if a variable is an array, if not false.
 Array.of(element0[, element1[, ...[, elementN]]])    // Creates a new Array instance with a variable number of arguments, regardless of number or type of the arguments.
-Array.prototype.flatMap()                            // arr.flatMap(callback) / Combines map and flat into a single method call.
-Array.prototype.group()                              //arr.group(callback) / Groups the elements of an array based on the callback's return value.
 
 // Instance: properties
 arr.length                                           // Reflects the number of elements in an array.
@@ -99,3 +95,9 @@ arr.reduce(callback[, initialValue])                 // Apply a function against
 arr.reduceRight(callback[, initialValue])            // Apply a function against an accumulator and each value of the array (from right-to-left) as to reduce it to a single value.
 arr.some(callback[, initialValue])                   // Returns true if at least one element in this array satisfies the provided testing function.
 arr.values()                                         // Returns a new Array Iterator object that contains the values for each index in the array.
+
+// String methods
+String.charAt(index)                                 // Returns the character at the specified index in a string.
+String.indexOf(character)                            // Returns the index of the first occurrence of a specified value in a string.
+String.substring(starting_index, ending_index)       // Returns a new string that is a subset of the original string.
+String.substring(starting_index)                     // Returns a substring from starting index to last index of string.

tools/ubuntu.sh

@@ -21,6 +21,7 @@ cat /proc/<process_id>/maps   # Show the current virtual memory usage of a Linux
 ip r # Display ip of the server
 
 lsof -i :9000 # List process running on port 9000
+kill -9 $(lsof -t -i:PORT) # Kill the process running on whichever port specified
 
 journalctl -u minio.service -n 100 --no-pager # List last 100 logs for specific service