JavaScript function* expression

The function* is an inbuilt keyword in JavaScript which is used to define a generator function inside an expression.

Syntax:

function* [name]([param1[, param2[, ..., paramN]]]) {
 statements
}

Parameters: This function accepts the following parameter as mentioned above and described below:

• name: This parameter is the function name.
• paramN: This parameter is the name of an argument to be passed to the function.
• statements: These parameters comprise the body of the function.

Example 1: Below examples illustrate the function* expression in JavaScript:

// Illustration of function* expression // use of function* keyword function* func() {  yield 1;  yield 2;  yield 3;  yield " - Geeks"; } let obj = ''; // Function calling for (const i of func()) {  obj = obj + i; } // Output console.log(obj); 

123 - Geeks

Example 2: Below examples illustrate the function* expression in JavaScript:

// Illustration of function* expression // use of function* keyword function* func2(y) {  yield y * y; }; function* func1() {  for (let i = 1; i < 6; i++) {  yield* func2(i);  } }; // Function calling for (const x of func1()) {  // Output  console.log(x); }; 

1 4 9 16 25

Supported Browsers:

The browsers supported by JavaScript function* expression are listed below:

• Google Chrome 49 and above
• Edge 12 and above
• Firefox 26 and above
• Opera 36 and above
• Safari 10 and above