要在JavaScript警报框中添加新行,请使用“ \ n”:
alert("Line One\n Line Two");
您可以尝试运行以下代码,在JavaScript的警报框中添加新行:
<html> <head> <script> <!-- function Warn() { alert ("这是警告消息!\nThis is a new line."); document.write ("这是警告消息!"); } //--> </script> </head> <body> <p>Click the following button to see the result: </p> <form> <input type="button" value="Click Me" onclick="Warn();" /> </form> </body> </html>