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此代码正在生成随机链接变量,但该链接未打开iframe
我需要在iframe
中显示随机链接,无论何时单击该按钮。怎么做?iframe上不显示随机网站
<html>
<script>
var cat1 = [
"http://arborjs.org",
"http://cartodb.com",
"http://vis4.net/labs/185"
];
var myFrame = document.getElementById("frame");
getRandomUrl(myFrame);
function getRandomUrl(myFrame) {
var index = Math.floor(Math.random()*cat1.length);
var url = cat1[index];
document.getElementById('frame').src = url;
}
btn.addEventListener("click", function() {
getRandomUrl(myFrame);
});
</script>
<body>
<button id="btn">Click</button>
<br>
<iframe id="frame" src="" style="width:500px; height: 500px"></iframe>
</body>
</html>