cheatsheet.js

//basic for loop
for (var i = 0; i < Things.length; i++) {
    Things[i]

    if(condition){
        return; //breaks out
    }
}
//Array.forEach version
let things = [1,2,3];
things.forEach(function(element, index, array){
    console.log(element);
    //1, 2, 3
});

//for..of - loop over iterables (Array,Map,Set,String,TypedArray,arguments object)
let iterable = [10, 20, 30];
for (let value of iterable) {
    value += 1;
    console.log(value);
  // 11, 21, 31
}

//for..in - loop over enumerable properties of an object
let obj = {a: 1, b: 2, c: 3};  
for (var prop in obj) {
    console.log(prop);
    //1, 2, 3
}

//fetching
fetch(url, fetchOptions)
    .then(function(fetchResponse){
        if(fetchResponse.ok){
            return fetchResponse.json();
        } else {
            console.log(url + " failed");
            displaySearchErrorMessage(fetchResponse.statusText);            
        }
    })


//IFFE
(function(){ 
    //--- code --- 
}())


//basic API fetch function 
function apiCall(url) {
    return fetch(url)
        .then(function (fetchResponse) {
            if(fetchResponse.ok){
                return fetchResponse.json();
            } else { throw error}
        })
        .then(function (json){
            //return json.data;
            return json;
        })
        .catch(function (error) {
            console.log(error.message);
        });
}