JavaScript – for…of Statement
The for…of statement loops over the values of any iterable, executing a block of code inside the loop once for each item found.
JavaScript – function Statement
The function statement declares a function to be executed later, when it is called. Functions are objects, and have both properties and methods.
JavaScript – if…else Statement
The if…else statement executes a block of code if a specified condition is true, and optionally, another block of code if false.
JavaScript – let Statement
The let statement declares a variable (container for storing information), and can be empty when declared, with the value assigned later.
JavaScript – switch Statement
The switch statement executes different blocks of code depending on set conditions, and uses the break keyword to break out of the switch block.
JavaScript – throw Statement
The throw statement allows you to generate a custom error (throw an exception), which can be a String, a Number, a Boolean, or an Object.
JavaScript – try…catch…finally Statement
The try…catch…finally statement handles errors without stopping JavaScript to output the error.
JavaScript – var Statement
The var statement declares a variable (container for storing information), and can be empty when declared, with the value assigned later.
JavaScript – while Statement
The while statement defines a code block to be executed for as long as a condition is true.
JavaScript – Array concat() Method
The Array concat() method joins two or more arrays, returning a new array containing the joined arrays, without changing the existing arrays.
JavaScript – Array constructor Property
The Array constructor property returns the function that created the Array prototype.
JavaScript – Array copyWithin() Method
The Array copyWithin() method copies array elements to another position in an array, overwriting the existing values.
JavaScript – Array entries() Method
The Array entries() method returns an array iterator object that shows the key and value pairs currently existing within the array.
JavaScript – Array every() Method
The Array every() method executes a function for each array element, returning true if the function returns true or false.
JavaScript – Array fill() Method
The Array fill() method fills specified elements in an array with a value, overwriting the original array.
JavaScript – Array filter() Method
The filter() method creates a new array filled with elements that pass a test provided by a function, leaving the existing array unchanged.
JavaScript – Array find() Method
The Array find() method executes a function for each array element and returns the value of the first element that passes a test.
JavaScript – Array findIndex() Method
The Array findIndex() method executes a function for each array element, and returns the index (position) of the first element that passes a test.
JavaScript – Array forEach() Method
The Array forEach() method calls a function, running it for each item in an array.
JavaScript – Array.from() Method
The Array.from() method returns an array from any object with a length property.