14-2.txt

来自「Javascript语言开发经典教程开发」· 文本 代码 · 共 24 行

<SCRIPT>
var _console = null;

function debug(msg) 
{
    // Open a window the first time we are called, or after an existing
    // console window has been closed.
    if ((_console == null) || (_console.closed)) { 
        _console = window.open("","console","width=600,height=300,resizable");
        // Open a document in the window to display plain text.
        _console.document.open("text/plain");
    }

    _console.document.writeln(msg);
}
</SCRIPT>

<!-- Here's an example of using this script. -->
<SCRIPT>var n = 0;</SCRIPT>
<FORM>
<INPUT TYPE="button" VALUE="Push Me"
       onClick="debug('You have pushed me:\t' + ++n + ' times.');">
</FORM>