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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops What are Loops?

Thanitsak Leuangsupornpong
Thanitsak Leuangsupornpong
7,490 Points

Not understand about add the number?

Why don't we use + to add the number to the counter,but teacher use +=. I don't understand why use"+=".

1 Answer

Iain Diamond
Iain Diamond
29,379 Points

It's often thought that programmers are lazy. So having to type

var long_descriptive_variable_name = long_descriptive_variable_name + 1;

is really too much work. To make our lives easier, JavaScript (and some other languages) allows the use of the short-hand syntax:

var long_descriptive_variable_name +=  1;

to do the same thing, but with less typing. :)

Hope this helps. iain