[Javascript] Using map() function instead of for loop

As an example, if Jason was riding the roller coaster (and when isn’t he), your goal would be to change his cell from ["Jason", "Millhouse"] to just "Jason Millhouse". Notice that an array goes in to the function you will build, but a string comes out.

var passengers = [ ["Thomas", "Meeks"],

                   ["Gregg", "Pollack"],

                   ["Christine", "Wong"],

                   ["Dan", "McGaw"] ];

var modifiedNames = passengers.map(function(cell){

    return cell[0] +" "+cell[1];

});

var modifiedNames = [ "Thomas Meeks",

                      "Gregg Pollack",

                      "Christine Wong",

                      "Dan McGaw" ];

modifiedNames.map(function(cell){

    alert("Yo, "+cell)

});

var puzzlers = [

  function ( a ) { return 3*a - 8; },

  function ( a ) { return (a+2) * (a+2) * (a+2); },

  function ( a ) { return a * a - 9; },

  function ( a ) { return a % 4; }

];

巴特西

[Javascript] Using map() function instead of for loop

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