var alphabet = ['a ', 'b ', 'c ', 'd ', 'e ']; var resultJoin = alphabet.join(""); document.write(alphabet); document.write(typeof(alphabet)); document.write(resultJoin); document.write(typeof (resultJoin));
var myString = "zero one two three four"; var mySplitResult = myString.split(" "); document.write(myString); document.write(typeof(myString)); document.write(mySplitResult); document.write(typeof(mySplitResult));
function concatFunc() { var str1 = "Make love "; var str2 = "not war !"; var res = str1.concat(str2); return res; } document.write(concatFunc());
var numbers = [4, 9, 16, 25]; var resultMap = numbers.map(Math.sqrt); document.write(numbers); document.write(resultMap);
var myString = ["Z", "H", "C", "M", "A", "W", "B"]; document.write(myString); var ResultSort = myString.sort(myString); document.write(ResultSort);
var myString = ["A", "B", "C", "D", "E", "Y", "Z"]; document.write(myString); var ResultReverse = myString.reverse(myString); document.write(ResultReverse);
var numbers = [65, 44, 12, 4]; function getSum(total, num) { return total + num; } document.write(numbers.reduce(getSum)); // plus simple : var numbers = [1,2,3,4,5].reduce( function( memo, val){ return memo + val; }); document.write(numbers);
var str = "Visit Microsoft !"; function replaceElement() { var res = str.replace("Microsoft", "W3Schools"); return res; } document.write(str); document.write(replaceElement());
var ages = [32, 33, 16, 40]; function checkAdult(age){ return age >= 18; } function filterAges(){ return ages.filter(checkAdult); } document.write(filterAges());
var a = ['a', 'b', 'c']; a.forEach( function(e){ document.write(e) }); // Equivalent boucle for : for(var i = 0; i < items.length; i++) { document.write(a[i]); } // ESC6 version : a.forEach( (e)=>{document.write(e)} );
var a = ['a', 'b', 'c', 'd']; // début a.unshift('z'); // fin a.push('e'); document.write(a);
var a = ['a', 'b', 'c', 'd']; // premier a.shift(); // dernier a.pop(); document.write(a);
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