1 . Every time we make this type mistake when we add string and number it will be concatenate not added .
2 .Always be remember string to convert Number use parseInt() function
3 . Math,floor() is a method it used for print lowest number
4 . For loop is most important for programmer because it will help not to do repeat a same type code .
6 . For Every programmer Array is most important , Because of array is a list of file where we can store data
7 . If we want to solve a problem most of the problem we solve using function it always help to solve anything easyly
8 . Why we use is isNaN ?
→ programmers make mistake we use isNaN, isNaN gives output boolean value isNaN means “not a number” output true or false .
9 . pop, and push are another important topic in javascritp ?
→ when we want to remove last element of array we use pop()
and when we want to add a element in array we use push() .
10. reverse method.
→ reverse method are use for to change a order of array .
var fruits = [“Banana”, “Orange”, “Apple”, “Mango”];