Admin: 1 версия

2010-05-26T08:24:18Z

1 версия

в 18:52, 25 мая 2010

2010-05-25T18:52:56Z

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== Catch an error (IE)==



<source lang="javascript">
<HTML>
<HEAD>
<TITLE>Catch that error!</TITLE>
<SCRIPT>
function catchError(errString) {
try {
try {
throw new Error (42, "errString is 42!");
}
catch(e) {
if (e.number == 42)
return (e.description + " Got this one!");
else
throw e;
}
}
catch (e){
return(e.description + " This one not handled here!");
}
}
</SCRIPT>
</HEAD>
<BODY>
<FORM name="theForm">
<INPUT type=text name=errText size=40 value="42">
<INPUT type=button
name=btnThrow
value="Catch it!"
onClick="alert(catchError(document.theForm.errText.value));">
</FORM>
</BODY>
</HTML></source>

== Throw out an Error==



<source lang="javascript">
<HTML>
<HEAD>
<TITLE>Throw that error!</TITLE>
<SCRIPT>
function throwError(errString) {
try {
throw new Error (42, errString);
}
catch(e){
alert("Error number: " + e.number + "; Description: " + e.description)
}
}
</SCRIPT>
</HEAD>
<BODY>
<FORM name="theForm">
Enter text for the error:
<INPUT type=text name=errText size=40>
<INPUT type=button name=btnThrow value="Throw it!" onClick="throwError(document.theForm.errText.value);">
</FORM>
</BODY>
</HTML></source>

== Try catch user exception==



<source lang="javascript">
<html>
<head>
<title>Try Catch Example</title>
<script type="text/javascript">
function addTwoNumbers(a, b) {
throw new Error("Two numbers are required.");
}
try {
result = addTwoNumbers(90);
} catch (oException) {
alert(oException.message);
}
</script>
</head>
<body>
</body>
</html></source>

== Use Error==



<source lang="javascript">
<html>
<head>
<title>Try Catch Example</title>
<script type="text/javascript">
function addTwoNumbers(a, b) {
throw new Error("Two numbers are required.");
}
try {
result = addTwoNumbers(90);
} catch (oException) {
alert(oException.message);
}
</script>
</head>
<body>
</body>
</html></source>

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Admin: 1 версия

в 18:52, 25 мая 2010