1.String Methods
string.includes('subtring')
checks whether a substring exists inside of a string
[check the character case]
string.indexOf(searchValue)
returns the index of the first occurrence of the
specified value, starting the search at fromIndex.
Returns -1 if the value is not found.
string.lastIndexOf(searchValue)
returns the index of the last occurrence of the
specified value, searching backwards from
fromIndex. Returns -1 if the value is not found.
string.slice(beginIndex, endIndex)
extracts a section of a string and returns it as a new
string, without modifying the original string.
- Array Methods
array[index]
returns a certain value from an array
push(value)
adds the value to the end of the array
pop()
removes the value from the end of the array
shift()
removes the value from the start of the array
unshift(value)
adds the value to the start of the array
splice(fromIndex, no_of_elements)
removes the number_of_elements, starting from
fromIndex from the array
slice(fromIndex, toIndex)
copies a certain part of the array
concat()
Join several arrays into one
join('')
returns a string of array values
array.length
returns the number of elements in the array
reverse()
reverse the order of the elements in an array
toString()
returns a string representing the specified array
and its elements.
3.Date Objects
getUTCMinutes()
Same as getMinutes(), but returns the UTC minutes
getUTCSeconds()
Same as getSeconds(), but returns the UTC seconds
getUTCMilliseconds()
Same as getMilliseconds(), but returns the UTC
milliseconds
- Window Object Properties sessionStorage Allows to save key/value pairs in a web browser.
Stores the data for one session
scrollX
An alias of pageXOffset
scrollY
An alias of pageYOffset
status
Sets or returns the text in the statusbar of a window
top
Returns the topmost browser window
Top comments (2)
I agree.
I'm not sure of the intent, but the quality of the post is sub par in my opinion. I don't know if I would go as far to say "useless", I would say there are much more useful posts than this. 😎
Wow, ya don’t need to be a douche about it.