javascript 语法检查

Question

try<script id="myjs" language="javascript"></script>
<form name="form1">
File Name:<input type="text" name="txt1"><br>
<input type="button" value="check js syntax" onclick="checkSyntax(this.form.txt1.value)">
</form>
<script language="javascript">function checkSyntax(strJsFileName)
{
  myjs.src = strJsFileName;
}function checkError()
{
  var sMsg = ["Error:\n", "File Name:\n", "Line Number:\n"];
  for (var i=0; i < 3; i++)
alert(sMsg[i] + arguments[i]);
}window.onerror = checkError;</script>