Iterating through an array with conditional statements

Question

Iterating through an array with conditional statements

I am currently considering the best approach to loop through an array in my code before proceeding further. I have some concerns about the link (var link = ... ) and the if statement.

Is this the most optimal way to iterate over array1 and compare the values to those in array2? If my code is correct (which I am unsure of at the moment), is there a more efficient way to achieve this?

Furthermore, I am curious whether this loop will run through every element of array1 indefinitely or just one of them indefinitely.

var array1 = [741, 451, 54188, 5847, 5418, 54944, 310, 541, 7451, 10211, 113, 9115, 62, 2841, 52482481, 24];
var array2 = [15, 418, 488, 130000, 8482, 55, 16, 14, 2546, 651, 4521, 11, 54, 659, 542, 1152];

var myObj = {};
array1.forEach(function(item, i) {
    myObj[item] = array2[i];
});

var Loop = setInterval(function(){ 
    for (var prop in array1) {
        var link = "http://blahblahblah.com/blah/" + array1[prop] + "/blahblah"
        $.get(link,function(data){
            var dataGiven = $("span.cost-in-usd:first-child").text();
            dataGiven = Number(dataGiven.replace(",",""));
            dataGiven = Number(dataGiven.replace("(",""));
            dataGiven = Number(dataGiven.replace(")",""));
            if (dataGiven <= myObj[prop]) {
                //stuff happens
            }
        });
    }
},0)

javascript arrays function if-statement for-loop

Answer 1

Answer №1

The for in statement is typically used to iterate through properties of an object. While it can sometimes be used with arrays, a more appropriate method is shown below:

for (var i = 0; i < array.length; i++) {
    var value = array[i];
    // Perform actions here
}

In response to the latter part of your query, using an interval to loop through an array would result in an infinite loop situation. It is unnecessary to set an interval for looping through an array as it would essentially loop through the entire array every 0 milliseconds.

Answer 2

The for in statement is typically used to iterate through properties of an object. While it can sometimes be used with arrays, a more appropriate method is shown below:

for (var i = 0; i < array.length; i++) {
    var value = array[i];
    // Perform actions here
}

In response to the latter part of your query, using an interval to loop through an array would result in an infinite loop situation. It is unnecessary to set an interval for looping through an array as it would essentially loop through the entire array every 0 milliseconds.

Answer 3

Answer №2

If I were in your shoes, here's how I'd approach it:

for (let i = 0; i < array1.length; i++) {
    if (array1[i] <= array2[i]) {
        //Take necessary action
    }
}

forEach can also be used as an alternative method.

In regards to your query about var link = ..., as long as it is a correct path and you remember to end it with a semicolon, you should be fine.

Answer 4

If I were in your shoes, here's how I'd approach it:

for (let i = 0; i < array1.length; i++) {
    if (array1[i] <= array2[i]) {
        //Take necessary action
    }
}

forEach can also be used as an alternative method.

In regards to your query about var link = ..., as long as it is a correct path and you remember to end it with a semicolon, you should be fine.

Iterating through an array with conditional statements

Answer №1

Answer №2

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