Array Method

arrayMethod.jsx

var array = [1,3,4,2];
// Output an array as a string separated with the argument's contents.
array.join(", ")
    //1, 3, 4, 2

// Outputs a string with elements separated by commas.
array.toString()
    //1,3,4,2

// Sort an array alphabetically or numerically.
array.sort()
    //[1,2,3,4]

// Removes a set of indices from an array. First argument is the start point, second argument is the number indices to remove, third argument is optional, what to insert as a replacement.
array.splice(1, 2, "string")
    //[3,4]
    //[1,"string",2]

// Returns selected indices as a new array. First argument is the start point, second argument is the ending index.
array.slice(1, 3)
    //[3,4]

// Reverses elements and returns the new array.
array.reverse()
    //[2,4,3,1]

// removes first index in array and outputs that element. Reference the array variable again to see new changes.
array.shift()
    //1
    //[3,4,2]

// adds new item to start of array and returns new length. Reference the array variable again to see new changes.
array.unshift("string")
    //5
    //["string",1,3,4,2]

// removes last index in array and outputs that element. Reference the array variable again to see new changes.
array.pop()
    //2
    //[1,3,4]

// Adds a new item to end of array and returns new length. Reference the array variable again to see new changes.
array.push("string")
  //5
  //[1,3,4,2,"string"]

// Joins two arrays together into one array.
array.concat(array2)
    //[1,3,4,2,"a","b"]