var nums = [1, 2, 3, 5];
for (var i = 0; i,nums.length; i++){	console.log(nums[i]);
} 

for (var i = 0; i < 4; i++) {
}

var sum = 0;
for (var i = 0; i < a.length; i++) {
sum + = a[i];
} // parsing an array

//pass an array of numbers into a function and log each number to the console
function yourFunctionsName(arrayToLoop){ //Initialize 'i' as your counter set to 0 //Keep looping while your counter 'i' is less than your arrays length //After each loop the counter 'i' is to increased by 1 for(let i = 0; i <arrayToLoop.length; i++){	//during each loop we will console.log the current array's element	//we use 'i' to designate the current element's index in the array	console.log(arrayToLoop[i]) }
}
//Function call below to pass in example array of numbers
yourFunctionsName([1, 2, 3, 4, 5, 6]) 

for (i in things) { // If things is an array, i will usually contain the array keys *not advised* // If things is an object, i will contain the member names // Either way, access values using: things[i]
}

for (let i=0; i<10; i++) {	console.log(i)
}

For printing 0 to 9
you can write like below also
var i;
for (i = 0; i < 10; i++) { console.log(i);
}

var i;
for (i = 0; i < 10 ; i++) { //do something
}

var listItem = [ {name: 'myName1', gender: 'male'}, {name: 'myName2', gender: 'female'}, {name: 'myName3', gender: 'male'}, {name: 'myName4', gender: 'female'}, ] for (const iterator of listItem) { console.log(iterator.name+ ' and '+ iterator.gender); }

for (let i = 0, len = cars.length, text = ""; i < len; i++) { text += cars[i] + "<br>";
}