<script language="Javascript" type="text/javascript">
function Next(){
var randp = Math.floor(Math.random()*3);
switch(randp){
case 0:
var websel = "http://w3schools.com";
break;
case 1:
var websel = "http://www.bbc.com/";
break;
case 2:
var websel = "http://en.wikipedia.org/wiki/BBC";
break;
default:
document.write("Error SWITCH(randp) " + randp + " ");
break;
}
}
</script>
<iframe name="iframea" src="http://w3schools.com" seamless="seamless" scrolling="auto" height="560px" width="1080px" align="middle" scale="1.5"></iframe>
<input type="button" value="Next" onClick="Next()">
很抱歉问了这个基本问题。我需要添加什么才能让下一个按钮打开一个链接(该链接是函数中的变量),目标为 iframe。 谢谢
最佳答案
您必须按如下方式更改 iframe 的 src:
<script language="Javascript" type="text/javascript">
function Next(){
var randp = Math.floor(Math.random()*3);
switch(randp){
case 0:
var websel = "http://w3schools.com";
break;
case 1:
var websel = "http://www.bbc.com/";
break;
case 2:
var websel = "http://en.wikipedia.org/wiki/BBC";
break;
default:
document.write("Error SWITCH(randp) " + randp + " ");
break;
}
alert(websel);
document.getElementById("iframea").src=websel;
}
</script>
<iframe name="iframea" id="iframea" src="http://w3schools.com" seamless="seamless" scrolling="auto" height="560px" width="1080px" align="middle" scale="1.5"></iframe>
<input type="button" value="Next" onClick="Next()">
顺便说一句,您可能会查看这个网站 this question是类似的。
关于javascript - 从 iframe 中的变量打开链接,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15659749/