Errata for Javascript: The Definitive Guide

added a semicolon to the end of line; now reads: document.loandata.total.value = round(monthly * payments);

Lines 3-4 of the first sample script in section 1.8 now reads: "... for (i=0, j=1, k=0, fib =0; i<50; i++, fib=j+k, k=fib){ document.write ( "Fibonacci (" + i + ") = " + fib); ..."

http://developer.netscape.com/software/jsdebug.html

Changed the end of the first sentence from: "... that do not begin with the digit zero, or as the digit zero by itself." to: "... that do not begin with the digit zero, except that the digit zero by itself is a Base-10 integer that represents zero."

Changed the meaning for Number.MIN_VALUE to: "Smallest (closest to zero) representable value"

The third example line of code read: Result is 12. It now reads: Result is "12".

The 3rd line of code used to read: "1" + 2 // Concatenation; 2 is converted to "2". Result is 12. It now reads: "1" + 2 // Concatenation; 2 is converted to "2". Result is "12".

The bitwise operators require numeric arguments. They internally coerce these numbers from their default floating-point representation into a 32-bit integer representation. With Navigator 2 and 3, if the operands do not fit in a 32-bit integer representation, the operators return NaN. In ECMAScript and JavaScript 1.2, however, these operators simply coerce their operands to 32-bit integers, even if it results in lost data.

Added a ; to the end of line 3 to read: if (!username) username = "John Doe";

Added a colon to the end of the third line, so that it reads: case "hello":

email: homer@simpsons.com now reads: email: "homer@simpsons.com"

Changed the last sentence from: For example, use $ instead of 44. to: For example, use 44 instead of 44.

open() Open a new window.

Changed the line from: <INPUT TYPE=button VALUE="Stop" to: <INPUT TYPE="button" VALUE="Stop"

The "self = null;" line of code was removed and replaced with: var err = no_such_property; // Error: "no_such_property is not defined"

did read: document.b1.onclick = ... now reads: document.forms[0].b1.onclick = ...

"this.layer.top"

"this.style.pixelTop"

Changed "acme.com" to ".acme.com"

In "Arguments", changed "the empty string" to "a comma" in the last sentence.

Change second line to: document.write('Today is: ' + d.toLocaleString()); // and print it out.

In "Description," added the following to the end of the 2nd paragraph: Note that if you pass an object to eval(), it converts the object to a string primitive and returns that string without evaluating it. Thus, if you pass a String object rather than a primitive string value, eval() does not evaluate the string as you might expect.

On this page, the author discusses the "form.action" property. I have found through testing that for the POST method of form submission to work, the "form.method" property must also be explicitly set, even if it is set within the original <FORM> tag. There seems to be no problem if the form uses the GET method, but when I tried a "POST", all I got were 405 errors in both Netscape (4.6) & IE (4.01). Setting the "method" property explicitly eliminated the problem.

Changed from: Synopsis Math.atan2(x, y) Arguments x The X-coordinate of the point. y The Y-coordinate of the point. to: Synopsis Math.atan2(y, x) Arguments y The Y-coordinate of the point. x The X-coordinate of the point. Added this paragraph to the end of the "Description" section: Note the unusual order of the arguments to this function. The Y-coordinate (the "rise") is passed before the X-coordinate (the "run").

The line 10 from bottom of page now reads: document.write(navigator.plugins["Shockwave"] ? Ie, replace the () brackets with [] around the word "Shockwave".

Specified /s+/ with a lower-case 's', as in the example on the following page.

string.substr(start, length) ("substr" is in constant-width font, and "string", "start", and "length" are all in constant-width italic font.)

Deleted the code line that read: [ WRAP=off|virtual|physical ] How word wrapping is handled INDEX:. Changed the entry for alert() from: alert(), 9, 22, 231-233, 709 to: alert(), 9-10, 22, 231-233, 709