实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
​x
 
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<!DOCTYPE html>
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<html>
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<head>
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<script>
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onerror=handleErr;
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var txt="";
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​
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function handleErr(msg,url,l)
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{
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txt="There was an error on this page.\n\n";
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txt+="Error: " + msg + "\n";
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txt+="URL: " + url + "\n";
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txt+="Line: " + l + "\n\n";
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txt+="Click OK to continue.\n\n";
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alert(txt);
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return true;
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}
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​
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function message()
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{
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adddlert("Welcome guest!");
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}
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</script>
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</head>
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​
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<body>
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<input type="button" value="View message" onclick="message()" />
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</body>
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​
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</html>
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