JavaScript Essentials For Dummies

Index

SYMBOLS

• - (minus sign), 27
• " (quotation marks)
  • handling internal, 118–120
  • string literals, 28
• ' (single quotation marks)
  • onclick attribute, 63
  • string literals, 28
• / (division operator), 20
• /* (multiline comment), 13–14
• // (double-slash), 13
• ; (semicolon), 7
• \ (backslash), 29
• _ (underscore), 24
• ` (back ticks), 119
• || (OR operator), 35
• + (concatenation sign), 33
• + (plus sign), 27
• = (equals sign), 19–20
• => (arrow functions), 70
• ! (NOT operator), 35
• && (AND operator), 35
• * (multiplication sign), 32
• [] (brackets operator), 150
• {} (braces)
  • if statements and, 40–41
  • as part of function, 56

A

• add() method, 95
• addEvent.Listener() method, 100
• after() method, 90
• alert() method, 7–8
• AND operator (&&), 35
• anonymous functions
  • assigning to variables, 67–68
  • overview, 66–70
  • replacing function call with, 68–70
• append() method, 90
• arguments
  • defined, 61
  • for Date object, 124
  • function, 56
  • location, 93
• arithmetic assignment operators, 32–33
• arrays
  • declaring, 106
  • elements and, 80
  • index numbers and, 105
  • iterating
    • find() method, 112–114
    • forEach() method, 109–110
    • map() method, 110–111
    • reduce() method, 111–112
  • length property, 114
  • manipulating, 114–115
  • methods, 114–115
  • overview, 105
  • populating, 106–109
  • specifying elements by class and tag name, 80
• arrow functions (=>), 70
• attributes
  • HTML, 97–99
  • id, 79
  • <img> tag, 97
  • onclick, 61, 63
  • radio button state, 147–148
  • single quotation marks and, 63
  • src, 15

B

• back ticks (`), 119
• backslash (\), 29
• before() method, 91
• block statements, ...