Question

我尝试使用Javascript生成随机图像，但它无法正常工作。我的代码如下;我不知道这个功能是否正确。

//var imageDir = document.images;
var imageDir = [ 10 ];

var imageDir =
    [
    "cards/1.png",
    "cards/2.png",
    "cards/3.png",
    "cards/4.png",
    "cards/5.png",
    "cards/6.png",
    "cards/7.png",
    "cards/8.png",
    "cards/9.png",
    "cards/10.png"

    ];
displayRandomImage = function(i, numberOfImages) {
    for (var i = 0; i < imageDir.length; i++, i = parseInt(Math.random() * i))
    {
        return i = Math.random(i, numberOfImages - 1);
    }
};

var imageDir = displayRandomImage(imageDir, 10);

for (var i = 0; i < imageDir.length; i++) {
    document.getElementById("randimage" + i).innerHTML = "<img src='" + imageDir[ i ] + "' />"
}

Answer 1

你想只挑选一张随机图片吗？或者以随机顺序显示数组中的所有图像？如果是后者，试试这个。

Source of shuffle function

//+ Jonas Raoni Soares Silva
//@ http://jsfromhell.com/array/shuffle [v1.0]
function shuffle(o){ //v1.0
    for(var j, x, i = o.length; i; j = Math.floor(Math.random() * i), x = o[--i], o[i] =     o[j], o[j] = x);
    return o;
};

var imagePaths = shuffle([
                "cards/1.png",
                "cards/2.png",
                "cards/3.png",
                "cards/4.png",
                "cards/5.png",
                "cards/6.png",
                "cards/7.png",
                "cards/8.png",
                "cards/9.png",
                "cards/10.png"]);

for(var i = 0; i < imagePaths.length; i++) {
    document.getElementById("randimage" + i).src = imagePaths[i];
}

请点击此处查看此操作的示例：http://jsfiddle.net/nSaAh/

随机图片Javascript

1 个答案: