Below javascript snippet is giving error on .done statement. Error is "Uncaught TypeError: undefined is not a function " Since we can use done with promise any idea why this error is coming?
var promise = new Promise(function(resolve,reject)
{
if(true)
{
console.log("1");
}
else
console.log("2");
});
promise.then( function(data1) {
if(true)
{
console.log("3");
}
else
console.log("4");
})
.then( function(data2) {
if(true)
{
console.log("5");
}
else
console.log("6");
})
.done(
function(response) {
console.log("done")
});
.fail(
function() {
console.log("fail");
});
There is no such method done
nor fail
in the Promise API, only then
and catch
at the object level: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise#Methods
Promise.prototype.then(onFulfilled, onRejected)
Appends fulfillment and rejection handlers to the promise, and returns a new promise resolving to the return value of the called handler.
Promise.prototype.catch(onRejected)
Appends a rejection handler callback to the promise, and returns a new promise resolving to the return value of the callback if it is called, or to its original fulfillment value if the promise is instead fulfilled.
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