JavaScript | function* expression
The function* is an inbuilt keyword in JavaScript which is used to define a generator function inside an expression.
Syntax:
Hey geek! The constant emerging technologies in the world of web development always keeps the excitement for this subject through the roof. But before you tackle the big projects, we suggest you start by learning the basics. Kickstart your web development journey by learning JS concepts with our JavaScript Course. Now at it's lowest price ever!
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 are comprise the body of the function.
Below examples illustrate the function* expression in JavaScript:
Example 1:
Javascript
<script> // 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);</script> |
Output:
123 - Geeks
Example 2:
Javascript
<script> // 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); }</script> |
Output:
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
