Asynch Function - Example
<!--
CLEANER WAY OF ASYNCH FUNCTION
In this example. Function B will wait for A to complete. Supported in node js 8.1 onwards.
-->
<html>
<script>
var d = new Date();
var n = 3000 + d.getTime(); //Add 3 seconds to current date
var counter = 1;
function a() {
let promise = new Promise(function (resolve, reject) {
setTimeout(function () {
console.log("Function A completed in " + (new Date() - d) + "ms /" + new Date())
counter = 2;
resolve(counter);
}, 3000);
});
return promise;
}
async function b() {
var x;
try {
x = await a();
console.log("Function B completes. Counter Value: " + counter + " / " + new Date());
} catch (error) {
console.log(error);
}
}
console.log("Starts at " + d);
b();
</script>
</html>