点击运行
<!DOCTYPE html> <html> <body> <iframe id="myframe" src="/zy/demo/demo_iframe.html"></iframe> <p>单击按钮可更改iframe中包含的文档的背景颜色。</p> <p id="demo"></p> <button onclick="myFunction()">试一试</button> <script> function myFunction() { var x = document.getElementById("myframe"); var y = x.contentDocument; y.body.style.backgroundColor = "red"; } </script> </body> </html>
运行结果
