Simple javascript ECMA 6 lambda examples
Published
•1 min readLets create an index.html file with below content
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<script src="main.js"></script>
<h6>ECMA 6 Javasscript</h6>
</body>
</html>
The main.js script file will hold the example
//declare an array with some values
const numArray = [12,23,45,23,34,11,00,09,78,66,01,05,83,45,64,49];
// Filter the numbers that are greater than 20
const numsGrtThan20 = numArray.filter( num => num > 20);
console.log(numsGrtThan20);
const numMapsqrt = numArray
.filter( num => (num > 10 && num < 50))
.map(n => n*2).map(m => Math.sqrt(m));
console.log(numMapsqrt);
const mapReduce = numArray.filter(n => n < 10).reduce((total,num)=>(total+num),0);
console.log("map reduce : "+mapReduce);
//Without functional approach
const sum = numArray.reduce(function(total,num){
return total + age;
},0);
In order to execute the above, we can use 200 OK a web sever plugin available in Chrome.
- Load the index.html file to the plugin and start the server. The index.html file should be loaded.
- Enable the console using Developer Tools, to see the console message from script file.
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