Some important JavaScript core concepts that we use………

.toLowerCase()

This is a method that is use to make a string value to all lower case item..

.toUpperCase()

This is a method that is use for turn all the string to uppercase ,reither it is uppercase or not

.trim()

This method removes the whitespaces from both sides of a string

.endsWith()

This method check the character that ends with the same character of a string or not

Math.abs()

This fuction return the absolute value of a number,like this

Math.floor()

This function return the biggest integar less than or equal to a given number

Math.max()

The function returns the highest valued number passes into it

Math.min()

This function returns the lowest valued number …and if any parameter is not a number then it converted into one

Math.round()

This function returns the value of a number rounded to a nearest integer

Array.concat()

This method is used to merge two or more arrays .in this method we can add two or more array together in a single array ..and we get a new array after merged these arrays

Array.join()

This method is used for join an element in a single array …the element would be comma ,semi colon ,hyphen e.t.c … by using the join method ..we can make a new string by concatenating all of the element of an array

Array.pop()

This method is used to remove the last item from an array and return it …

Array.push()

This method is used for add an item to the end position of an array and return the whole array in to it.. and return the new length array

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