For example:
var resultList = [];
var objectName = (userName) => {
};
objectName.rowCount; // return overall count
objectName.fetchNext(); // updated data will be available in resultList
I have tried multiple solutions with no result like
var resultList = [];
var objectName = (userName) => {
var rowCount = 0;
init() {
// make call to server and read data
rowCount = 5; // setting dummy data
};
fetchNext = function(){
// logic here
resultList = [] // new data
};
init();
};
Another attempt
var x = function(){
var a = function(){console.log('a');};
var b = function(){console.log('b');};
return {a: a, b: b};
}
x.a(); // not able to call this function
You can't use an arrow function as a constructor, so tyou could change your code to use a traditional function:
function objectName(userName) {
var rowCount = 0;
init = function() {
// make call to server and read data
rowCount = 5; // setting dummy data
};
this.fetchNext = function(){
// logic here
const resultList = [] // new data
return resultList;
};
init();
};
var myObj = new objectName("foo");
console.log(myObj.fetchNext());Or, you can return an object from your arrow function
var objectName = (userName) => {
var rowCount = 0;
function init() {
// make call to server and read data
rowCount = 5; // setting dummy data
};
init();
return {
fetchNext: function(){
// logic here
const resultList = [] // new data
return resultList;
}
}
};
var myObj = objectName("Foo");
console.log(myObj.fetchNext());Related:
For completeness, the reason your edit did not work is that you defined x but never executed the function. This works:
var x = function(){
var a = function(){console.log('a');};
var b = function(){console.log('b');};
return {a: a, b: b};
}
x().a(); // must execute x to get the resultAnd is esssentially the same as my second example above
In addition to the other answer, if you want to use an arrow function you can use it like this by wrapping the object in paranthesis:
const objectName = (userName) => ({
rowCount: 0,
resultList: [],
init() {
this.rowCount = 5;
},
fetchNext() {
// fetch results
this.resultList = [1, 2, 3, 4];
}
});
const results = objectName('kyroath');
console.log('before init():', results.rowCount); // 0
results.init()
console.log('after init():', results.rowCount); // 5
console.log('before fetchNext():', results.resultList); // []
results.fetchNext()
console.log('after fetchNext():', results.resultList); // [1, 2, 3, 4]Are you just looking for a Class?
class Obj {
constructor() {
this.rowCount = 0;
this.resultList = [];
}
init() {
// make call to server and read data
this.rowCount = 5; // setting dummy data
}
fetchNext() {
// logic here
this.resultList.push(1); // new data
return this.resultList;
}
}
const obj = new Obj("userName");
obj.init();
const row = obj.rowCount;
const res = obj.fetchNext();
console.log(row);
console.log(res);