This is a draft cheat sheet. It is a work in progress and is not finished yet.
String Object Methods
Method |
Description |
charAt() |
Returns the character at the specified index |
concat() |
joins two or more strings, and returns a copy of the joined strings |
indexOf() |
returns the position of the first found occurence of a specified value in a string |
lastIndexOf() |
returns the position of the last found occurence of a specified value in a string |
replace() |
searches for a match between a substring (or regex) and a string, and replaces the matched substring with a new substring |
search() |
searches for a match between a regex and a string, and returns the position of the match |
slice() |
extracts a part of a string and returns a new string |
split() |
splits a string into an array of substrings |
substr() |
extracts the characters from a string, beginning at a specified start position, and through the specified number of character |
substring() |
extracts the characters from a string, between two specified indices |
toLowerCase() |
converts a string to lowercase letters |
toUpperCase() |
converts a string to uppercase letters |
trim() |
removes whitespace from both ends of a string |
valueOf() |
returns the primitive value of a String object |
toString() |
returns the value of a String object |
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Array Object Methods
Method |
Description |
concat() |
joins two or more arrays, and returns a copy of the joined array |
indexOf() |
search the array for an element and returns its position |
join() |
joins all elements of an array into a string |
lastIndexOf() |
search the array for an element, starting at the end, and returns its position |
pop() |
removes the last element of an array, and returns that element |
push() |
adds new elements to the end of an array, and returns the new length |
reverse() |
reverses the order of the elements in an array |
shift() |
removes the first element of an array, and returns that element |
sort() |
sorts the elements of an array |
toString() |
converts an array to a string, and returns the result |
valueOf() |
returns the primitive value of an array |
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