evaldosantos · November 12, 2015 18:09
diff --git a/sobre-javascript b/sobre-javascript
 <!DOCTYPE html>
 <html>
 <head>
    <title></title>
 </head>
 <body>
    <button class="button_">button 1</button>
    <button>button 2</button>
    <button class="button_">button 3</button>
    <script type="text/javascript">
    var jQuery = function(elem) {
        return document.querySelectorAll(elem);
    };

    (function(davide) {
        /*** com FOR
        var descricoes = [
            'descricao do botao 1',
            'descricao do botao 2',
            'descricao do botao 3',
        ];

        var buttons = davide('button');

        function buttonHandle(i) {
            return function() {
                console.log('clicked!', descricoes[i]);   
            };
        }

        for(var i=0; i<buttons.length; i++) {
            buttons[i].onclick = buttonHandle(i);
        }
        console.log(i);
        */

        // com FOREACH :D :D <3
        var descricoes = [
            'descricao do botao 1',
            'descricao do botao 2',
            'descricao do botao 3',
        ];

        [].forEach.call(davide('button'), function(el, idx) {
            el.onclick = (function buttonHandle(i) {
                return function() {
                    console.log('clicked!', descricoes[i]);   
                };
            })(idx);
        })

    })(jQuery);


    var myArr = [1,2,3,4,5,6,7,8,9];
    /*
    for(var i=0; i<myArr.length; i++) {
        console.log(myArr[i]);
    }
    */
    /*
    for(var i=0; i<myArr.length; i++) {
        myArr[i] = myArr[i]*2;
    }
    console.log(myArr)
    */
    console.log(myArr.map(function(el) { return el*2; }));
    /*
    var pares = [];
    for(var i=0; i<myArr.length; i++) {
        if(myArr[i]%2==0) {
            pares.push(myArr[i])
        }
    }

    console.log(pares);
    */

    console.log(myArr.filter(function(el){ return el%2==0; }));

    Array.prototype.sum = function() {
        return this.reduce(function(soma, el) {
            soma = soma+el;
            return soma;
        });
    }
    </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title></title>
	</head>
	<body>
	<button class="button_">button 1</button>
	<button>button 2</button>
	<button class="button_">button 3</button>
	<script type="text/javascript">
	var jQuery = function(elem) {
	return document.querySelectorAll(elem);
	};

	(function(davide) {
	/*** com FOR
	var descricoes = [
	'descricao do botao 1',
	'descricao do botao 2',
	'descricao do botao 3',
	];

	var buttons = davide('button');

	function buttonHandle(i) {
	return function() {
	console.log('clicked!', descricoes[i]);
	};
	}

	for(var i=0; i<buttons.length; i++) {
	buttons[i].onclick = buttonHandle(i);
	}
	console.log(i);
	*/

	// com FOREACH :D :D <3
	var descricoes = [
	'descricao do botao 1',
	'descricao do botao 2',
	'descricao do botao 3',
	];

	[].forEach.call(davide('button'), function(el, idx) {
	el.onclick = (function buttonHandle(i) {
	return function() {
	console.log('clicked!', descricoes[i]);
	};
	})(idx);
	})

	})(jQuery);


	var myArr = [1,2,3,4,5,6,7,8,9];
	/*
	for(var i=0; i<myArr.length; i++) {
	console.log(myArr[i]);
	}
	*/
	/*
	for(var i=0; i<myArr.length; i++) {
	myArr[i] = myArr[i]*2;
	}
	console.log(myArr)
	*/
	console.log(myArr.map(function(el) { return el*2; }));
	/*
	var pares = [];
	for(var i=0; i<myArr.length; i++) {
	if(myArr[i]%2==0) {
	pares.push(myArr[i])
	}
	}

	console.log(pares);
	*/

	console.log(myArr.filter(function(el){ return el%2==0; }));

	Array.prototype.sum = function() {
	return this.reduce(function(soma, el) {
	soma = soma+el;
	return soma;
	});
	}
	</script>
	</body>
	</html>