<SCRIPT type = " Text/JavaScript " >
Onerror = handleerr
VaR TXT = ""
Function handleerr (MSG, URL, L)
{
TXT = " This page contains errors. \ N "
TXT + = " Error: " + MSG +" \ N "
TXT + = " URL: " + URL + " \ N "
TXT + = " Row: " + L + " \ N "
TXT + =" Click "OK" to continue. \ N "
Alert (txt)
Return True
}
Function Message ()
{
Adddlert ( " Welcome guest! " )
}
</SCRIPT>
</Head>
<Body>
<Input type =" Button " Value = " View Messages " Onclick = " Message () " />
</Body>
Summary:
For example, to do a uidesign, you must first learn to face Mu, read more, and practice more. Practice makes perfect.
After learning anything and understanding the truth, you can use it easily.
Design principles and methods. On the basis of understanding, you must practice more and practice more. Only by thinking and digesting yourself can you truly master the technology.
Do not focus only on the final results of a specific effect, but also understand the Core Principles. (Methods and Techniques)
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