How to find the sum of a sequence in javascript through a while loop

In JavaScript, the sum of numerical values ​​can be easily implemented using a while loop. With a while loop, we can easily iterate through a sequence and add its elements to find the sum of the sequence.

First, we need a sequence to perform the sum operation. You can choose an array of any length and data type as the sequence. The following is an example array:

var numbers = [1, 2, 3, 4, 5];

Next, we need to define a variable to store the sum of the sequence, for example:

var sum = 0;

Then, We can use a while loop to iterate through an array and add its elements. For example:

var i = 0;
while (i < numbers.length) {
  sum += numbers[i];
  i++;
}

In the while loop, we use the variable i to iterate the subscripts of the array elements. When i is less than the array length, continue the loop. In the body of the loop, we add the current element to the sum and increment i by 1 to loop to the next element.

Finally, we can print out the result of the summation, that is, the sum of the sequence:

console.log(sum); // 输出结果为15

The complete code is as follows:

var numbers = [1, 2, 3, 4, 5];
var sum = 0;
var i = 0;
while (i < numbers.length) {
  sum += numbers[i];
  i++;
}
console.log(sum); // 输出结果为15

Of course, the above code is just a simple For example, we can modify the array content and algorithm implementation to meet different needs. In general, the while loop is a very good tool for realizing numerical summation, which allows us to easily make statistics and analysis of the sequence.

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