Fix several mistakes in Chapter 9

marijnh · marijnh · commit 9e08a7e1f97c · 2018-02-06T11:04:55.000+01:00
diff --git a/09_regexp.md b/09_regexp.md
@@ -448,7 +448,7 @@ console.log(getDate("30-1-2003"));
 {{index destructuring, "underscore character"}}
 
 The `_` (underscore) binding is ignored, and only used to "skip" the
-full match element in the array returned by `match`.
+full match element in the array returned by `exec`.
 
 ## Word and string boundaries
 
@@ -1112,7 +1112,7 @@ the match to a binding and immediately use that assignment as the test
 in the `if` statement.
 
 If a line is not a section header or a property, the function checks
-whether it is a comment or an emty line using the expression
+whether it is a comment or an empty line using the expression
 `/^\s*(;.*)?$/`. Do you see how it works? The part between the
 ((parentheses)) will match comments, and the `?` makes sure it also
 matches lines containing only whitespace. When a line doesn't match
diff --git a/code/solutions/09_3_numbers_again.js b/code/solutions/09_3_numbers_again.js
@@ -4,14 +4,14 @@ let number = /^(\+|-|)(\d+(\.\d*)?|\.\d+)([eE](\+|-|)\d+)?$/;
 // Tests:
 for (let str of ["1", "-1", "+15", "1.55", ".5", "5.",
                  "1.3e2", "1E-4", "1e+12"]) {
-  if (!number.test(s)) {
-    console.log("Failed to match '" + s + "'");
+  if (!number.test(str)) {
+    console.log(`Failed to match '${str}'`);
   }
 }
 for (let str of ["1a", "+-1", "1.2.3", "1+1", "1e4.5",
                  ".5.", "1f5", "."]) {
-  if (number.test(s)) {
-    console.log("Incorrectly accepted '" + s + "'");
+  if (number.test(str)) {
+    console.log(`Incorrectly accepted '${str}'`);
   }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -4,14 +4,14 @@ let number = /^(\+\|-\|)(\d+(\.\d*)?\|\.\d+)([eE](\+\|-\|)\d+)?$/;`
`4`	`4`	`// Tests:`
`5`	`5`	`for (let str of ["1", "-1", "+15", "1.55", ".5", "5.",`
`6`	`6`	`"1.3e2", "1E-4", "1e+12"]) {`
`7`		`- if (!number.test(s)) {`
`8`		`- console.log("Failed to match '" + s + "'");`
	`7`	`+ if (!number.test(str)) {`
	`8`	+ console.log(`Failed to match '${str}'`);
`9`	`9`	`}`
`10`	`10`	`}`
`11`	`11`	`for (let str of ["1a", "+-1", "1.2.3", "1+1", "1e4.5",`
`12`	`12`	`".5.", "1f5", "."]) {`
`13`		`- if (number.test(s)) {`
`14`		`- console.log("Incorrectly accepted '" + s + "'");`
	`13`	`+ if (number.test(str)) {`
	`14`	+ console.log(`Incorrectly accepted '${str}'`);
`15`	`15`	`}`
`16`	`16`	`}`
`17`	`17`