随机图片 javascript
Random image javascript
虽然我觉得答案很简单,但我对这张随机图片有点费劲javascript。我的代码一次生成四个字母(图像)。我如何获得重新生成新字母而不是添加四个额外字母(图像)的代码?
这里还有一个Jsfiddle。
<script>
function getRandomImage() {
//declare an array to store the images
var randomImage = new Array();
//insert the URL of images in array
randomImage[0] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/a.png";
randomImage[1] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/b.png";
randomImage[2] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/c.png";
randomImage[3] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/d.png";
randomImage[4] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/e.png";
randomImage[5] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/f.png";
randomImage[6] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/g.png";
randomImage[7] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/h.png";
randomImage[8] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/i.png";
randomImage[9] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/j.png";
randomImage[10] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/k.png";
randomImage[11] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/l.png";
randomImage[12] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/m.png";
randomImage[13] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/n.png";
randomImage[14] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/o.png";
randomImage[15] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/p.png";
randomImage[16] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/q.png";
randomImage[17] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/r.png";
randomImage[18] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/s.png";
randomImage[19] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/t.png";
randomImage[20] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/u.png";
randomImage[21] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/v.png";
randomImage[22] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/w.png";
randomImage[23] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/x.png";
randomImage[24] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/y.png";
randomImage[25] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/z.png";
//loop to display five randomly chosen images at once
for (let i=0; i< 4; i++) {
//generate a number and provide to the image to generate randomly
var number = Math.floor(Math.random()*randomImage.length);
//print the images generated by a random number
document.getElementById("result").innerHTML += '<img src="'+ randomImage[number] +'" style="height:150px";/>';
}
}
</script>
<body>
<h1> GENERATE YOUR LETTERS... </h1>
<!-- call user-defined getRandomImage function to generate image -->
<center><button onclick = "getRandomImage()" class="btn btn-white btn- animate">Let's Go!</button></center>
<br> <br>
<span id="result" align="center"> </span>
您可以在 for 循环之前添加 document.getElementById('result').innerHTML = ""
以在添加 4 个新项目之前清除结果 div。
您还可以通过使用 for 循环生成图像 URL 来大大减少代码。
var letters = 'abcdefghijklmnopqrstuvwxyz'.split('');
for (let i = 0; i < letters.length; i++) {
randomImage.push(`http://www.englishclass.dk/_themes/englishclass/img/scrabble/${letters[i]}.png`)
}
document.getElementById('result').innerHTML = " " for 循环之前
<script>
function getRandomImage() {
//declare an array to store the images
var randomImage = new Array();
//insert the URL of images in array
randomImage[0] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/a.png";
randomImage[1] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/b.png";
randomImage[2] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/c.png";
randomImage[3] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/d.png";
randomImage[4] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/e.png";
randomImage[5] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/f.png";
randomImage[6] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/g.png";
randomImage[7] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/h.png";
randomImage[8] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/i.png";
randomImage[9] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/j.png";
randomImage[10] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/k.png";
randomImage[11] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/l.png";
randomImage[12] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/m.png";
randomImage[13] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/n.png";
randomImage[14] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/o.png";
randomImage[15] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/p.png";
randomImage[16] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/q.png";
randomImage[17] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/r.png";
randomImage[18] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/s.png";
randomImage[19] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/t.png";
randomImage[20] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/u.png";
randomImage[21] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/v.png";
randomImage[22] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/w.png";
randomImage[23] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/x.png";
randomImage[24] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/y.png";
randomImage[25] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/z.png";
//loop to display five randomly chosen images at once
document.getElementById("result").innerHTML="";
for (let i=0; i< 4; i++) {
//generate a number and provide to the image to generate randomly
var number = Math.floor(Math.random()*randomImage.length);
//print the images generated by a random number
document.getElementById("result").innerHTML += '<img src="'+ randomImage[number] +'" style="height:150px";/>';
}
}
</script>
<body>
<h1> GENERATE YOUR LETTERS... </h1>
<!-- call user-defined getRandomImage function to generate image -->
<center><button onclick = "getRandomImage()" class="btn btn-white btn- animate">Let's Go!</button></center>
<br> <br>
<span id="result" align="center"> </span>
在函数定义的开头添加以下代码:
document.getElementById("result").innerHTML = "";
像这样
<script>
function getRandomImage() {
document.getElementById("result").innerHTML = "";
//declare an array to store the images
var randomImage = new Array();
//insert the URL of images in array
randomImage[0] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/a.png";
randomImage[1] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/b.png";
randomImage[2] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/c.png";
randomImage[3] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/d.png";
randomImage[4] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/e.png";
randomImage[5] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/f.png";
randomImage[6] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/g.png";
randomImage[7] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/h.png";
randomImage[8] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/i.png";
randomImage[9] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/j.png";
randomImage[10] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/k.png";
randomImage[11] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/l.png";
randomImage[12] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/m.png";
randomImage[13] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/n.png";
randomImage[14] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/o.png";
randomImage[15] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/p.png";
randomImage[16] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/q.png";
randomImage[17] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/r.png";
randomImage[18] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/s.png";
randomImage[19] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/t.png";
randomImage[20] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/u.png";
randomImage[21] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/v.png";
randomImage[22] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/w.png";
randomImage[23] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/x.png";
randomImage[24] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/y.png";
randomImage[25] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/z.png";
//loop to display five randomly chosen images at once
for (let i=0; i< 4; i++) {
//generate a number and provide to the image to generate randomly
var number = Math.floor(Math.random()*randomImage.length);
//print the images generated by a random number
document.getElementById("result").innerHTML += '<img src="'+ randomImage[number] +'" style="height:150px";/>';
}
}
</script>
<body>
<h1> GENERATE YOUR LETTERS... </h1>
<!-- call user-defined getRandomImage function to generate image -->
<center><button onclick = "getRandomImage()" class="btn btn-white btn- animate">Let's Go!</button></center>
<br> <br>
<span id="result" align="center"> </span>
如 "innerHTML += ..." vs "appendChild(txtNode)" 中所述,通过 innerHTML += '<img />'
添加新元素会导致浏览器重建整个容器。这可能会导致性能问题,具体取决于您调用它的地点、时间和频率。为了完整起见,我提供了性能更高的示例(有点冗长但通常更好的做法)。
这应该替换您的 for
循环:
// Clear all childs from the container
const container = document.getElementById("result");
container.childNodes.forEach((child) => child.remove());
for (let i = 0; i < 4; i++) {
const number = Math.floor(Math.random() * randomImage.length);
// Create a new <img /> element and append it to the container
const image = document.createElement("img");
image.src = randomImage[number];
image.style.height = "150px";
container.append(image);
}
您还可以使用投票最高的答案 here 中给出的方法,在不拆分字符串的情况下获得随机字母。然后,您可以将上面其他人提到的代码简化为几行。
我已经对下面的代码进行了注释。
// Function triggered with onclick event
function getRandomImage() {
// Clear the previous letters
document.getElementById("result").innerHTML = "";
// Loop
for (let i = 0; i < 4; i++) {
// Generate random letter
letter = String.fromCharCode(97 + Math.floor(Math.random() * 26))
// Add image to #result
document.getElementById("result").innerHTML += '<img src="http://www.englishclass.dk/_themes/englishclass/img/scrabble/' + letter + '.png" style="height:150px";/>';
}
}
<h1> GENERATE YOUR LETTERS... </h1>
<center>
<button onclick="getRandomImage()" class class="btn btn-white btn-animate">
Let's Go!
</button>
</center>
<br>
<br>
<span id="result" align="center"> </span>
虽然我觉得答案很简单,但我对这张随机图片有点费劲javascript。我的代码一次生成四个字母(图像)。我如何获得重新生成新字母而不是添加四个额外字母(图像)的代码?
这里还有一个Jsfiddle。
<script>
function getRandomImage() {
//declare an array to store the images
var randomImage = new Array();
//insert the URL of images in array
randomImage[0] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/a.png";
randomImage[1] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/b.png";
randomImage[2] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/c.png";
randomImage[3] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/d.png";
randomImage[4] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/e.png";
randomImage[5] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/f.png";
randomImage[6] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/g.png";
randomImage[7] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/h.png";
randomImage[8] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/i.png";
randomImage[9] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/j.png";
randomImage[10] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/k.png";
randomImage[11] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/l.png";
randomImage[12] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/m.png";
randomImage[13] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/n.png";
randomImage[14] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/o.png";
randomImage[15] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/p.png";
randomImage[16] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/q.png";
randomImage[17] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/r.png";
randomImage[18] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/s.png";
randomImage[19] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/t.png";
randomImage[20] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/u.png";
randomImage[21] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/v.png";
randomImage[22] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/w.png";
randomImage[23] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/x.png";
randomImage[24] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/y.png";
randomImage[25] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/z.png";
//loop to display five randomly chosen images at once
for (let i=0; i< 4; i++) {
//generate a number and provide to the image to generate randomly
var number = Math.floor(Math.random()*randomImage.length);
//print the images generated by a random number
document.getElementById("result").innerHTML += '<img src="'+ randomImage[number] +'" style="height:150px";/>';
}
}
</script>
<body>
<h1> GENERATE YOUR LETTERS... </h1>
<!-- call user-defined getRandomImage function to generate image -->
<center><button onclick = "getRandomImage()" class="btn btn-white btn- animate">Let's Go!</button></center>
<br> <br>
<span id="result" align="center"> </span>
您可以在 for 循环之前添加 document.getElementById('result').innerHTML = ""
以在添加 4 个新项目之前清除结果 div。
您还可以通过使用 for 循环生成图像 URL 来大大减少代码。
var letters = 'abcdefghijklmnopqrstuvwxyz'.split('');
for (let i = 0; i < letters.length; i++) {
randomImage.push(`http://www.englishclass.dk/_themes/englishclass/img/scrabble/${letters[i]}.png`)
}
document.getElementById('result').innerHTML = " " for 循环之前
<script>
function getRandomImage() {
//declare an array to store the images
var randomImage = new Array();
//insert the URL of images in array
randomImage[0] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/a.png";
randomImage[1] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/b.png";
randomImage[2] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/c.png";
randomImage[3] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/d.png";
randomImage[4] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/e.png";
randomImage[5] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/f.png";
randomImage[6] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/g.png";
randomImage[7] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/h.png";
randomImage[8] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/i.png";
randomImage[9] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/j.png";
randomImage[10] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/k.png";
randomImage[11] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/l.png";
randomImage[12] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/m.png";
randomImage[13] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/n.png";
randomImage[14] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/o.png";
randomImage[15] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/p.png";
randomImage[16] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/q.png";
randomImage[17] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/r.png";
randomImage[18] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/s.png";
randomImage[19] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/t.png";
randomImage[20] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/u.png";
randomImage[21] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/v.png";
randomImage[22] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/w.png";
randomImage[23] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/x.png";
randomImage[24] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/y.png";
randomImage[25] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/z.png";
//loop to display five randomly chosen images at once
document.getElementById("result").innerHTML="";
for (let i=0; i< 4; i++) {
//generate a number and provide to the image to generate randomly
var number = Math.floor(Math.random()*randomImage.length);
//print the images generated by a random number
document.getElementById("result").innerHTML += '<img src="'+ randomImage[number] +'" style="height:150px";/>';
}
}
</script>
<body>
<h1> GENERATE YOUR LETTERS... </h1>
<!-- call user-defined getRandomImage function to generate image -->
<center><button onclick = "getRandomImage()" class="btn btn-white btn- animate">Let's Go!</button></center>
<br> <br>
<span id="result" align="center"> </span>
在函数定义的开头添加以下代码:
document.getElementById("result").innerHTML = "";
像这样
<script>
function getRandomImage() {
document.getElementById("result").innerHTML = "";
//declare an array to store the images
var randomImage = new Array();
//insert the URL of images in array
randomImage[0] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/a.png";
randomImage[1] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/b.png";
randomImage[2] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/c.png";
randomImage[3] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/d.png";
randomImage[4] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/e.png";
randomImage[5] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/f.png";
randomImage[6] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/g.png";
randomImage[7] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/h.png";
randomImage[8] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/i.png";
randomImage[9] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/j.png";
randomImage[10] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/k.png";
randomImage[11] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/l.png";
randomImage[12] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/m.png";
randomImage[13] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/n.png";
randomImage[14] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/o.png";
randomImage[15] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/p.png";
randomImage[16] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/q.png";
randomImage[17] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/r.png";
randomImage[18] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/s.png";
randomImage[19] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/t.png";
randomImage[20] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/u.png";
randomImage[21] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/v.png";
randomImage[22] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/w.png";
randomImage[23] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/x.png";
randomImage[24] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/y.png";
randomImage[25] = "http://www.englishclass.dk/_themes/englishclass/img/scrabble/z.png";
//loop to display five randomly chosen images at once
for (let i=0; i< 4; i++) {
//generate a number and provide to the image to generate randomly
var number = Math.floor(Math.random()*randomImage.length);
//print the images generated by a random number
document.getElementById("result").innerHTML += '<img src="'+ randomImage[number] +'" style="height:150px";/>';
}
}
</script>
<body>
<h1> GENERATE YOUR LETTERS... </h1>
<!-- call user-defined getRandomImage function to generate image -->
<center><button onclick = "getRandomImage()" class="btn btn-white btn- animate">Let's Go!</button></center>
<br> <br>
<span id="result" align="center"> </span>
如 "innerHTML += ..." vs "appendChild(txtNode)" 中所述,通过 innerHTML += '<img />'
添加新元素会导致浏览器重建整个容器。这可能会导致性能问题,具体取决于您调用它的地点、时间和频率。为了完整起见,我提供了性能更高的示例(有点冗长但通常更好的做法)。
这应该替换您的 for
循环:
// Clear all childs from the container
const container = document.getElementById("result");
container.childNodes.forEach((child) => child.remove());
for (let i = 0; i < 4; i++) {
const number = Math.floor(Math.random() * randomImage.length);
// Create a new <img /> element and append it to the container
const image = document.createElement("img");
image.src = randomImage[number];
image.style.height = "150px";
container.append(image);
}
您还可以使用投票最高的答案 here 中给出的方法,在不拆分字符串的情况下获得随机字母。然后,您可以将上面其他人提到的代码简化为几行。
我已经对下面的代码进行了注释。
// Function triggered with onclick event
function getRandomImage() {
// Clear the previous letters
document.getElementById("result").innerHTML = "";
// Loop
for (let i = 0; i < 4; i++) {
// Generate random letter
letter = String.fromCharCode(97 + Math.floor(Math.random() * 26))
// Add image to #result
document.getElementById("result").innerHTML += '<img src="http://www.englishclass.dk/_themes/englishclass/img/scrabble/' + letter + '.png" style="height:150px";/>';
}
}
<h1> GENERATE YOUR LETTERS... </h1>
<center>
<button onclick="getRandomImage()" class class="btn btn-white btn-animate">
Let's Go!
</button>
</center>
<br>
<br>
<span id="result" align="center"> </span>