Ultimate JavaScript CheatSheet
I’ve been revising JavaScript for days now and I realized why not make a cheatsheet to read in one go. Cheat Sheets are something developers need always for reference. So here I have compiled many JavaScript reference codes. See the classification and find it. This post is helpful for learners and developers.
JavaScript Number Method Cheat Sheet
toString() : returns a number as a string.
toExponential() : returns a string, with a number rounded and written using exponential notation.
toFixed() : returns a string, with the number written with a specified number of decimals
toPrecision() : returns a string, with a number written with a specified length
valueOf() : returns a wrapped primitive value of a number.
JavaScript String Methods Cheat Sheet
charAt() : Returns the character at the specified index
concat() : Joins two or more strings, and returns a copy of the joined strings
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
trim() : Removes whitespace from both ends of a string
substr() : Extracts the character from a string, beginning at a specified start position, and through the specified number of character
toLowerCase() : Converts a string to lowercase letters
toUpperCase() : Converts a string to uppercase letters
JavaScript Array Method Cheat sheet
indexOf() : Search the array for an element and returns its position
concat() : Joins two or more arrays, and returns a copy of the joined array
join() : Joins all elements of an array into a string
push() : Adds an element to the array at the end, and returns the new array length
pop() : Removes the last element of an array, and returns that element
reverse() : Reverses the order of the elements in an array
sort() : Sorts the element of an array
shift() : Removes the first element of an array, and returns that element
unshift() : Adds a new element to an array at the beginning
toString() : Converts an array to string, and returns the result
Get Date Methods Cheat Sheet
getFullYear() : Returns the year of the specified date as a 4 digit number (yyyy)
getMonth() : Returns the month in the specified date as a number (0–11)
getDate() : Returns the day of the month for the specified date as a number (1–31)
getHours() : Returns the hour for the specified date (0–23)
getMinutes() : Returns the minutes in the specified date (0–59)
getSeconds() : Returns the seconds in the specified date (0–59)
