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JavaScript Essentials For Dummies
book

JavaScript Essentials For Dummies

by Paul McFedries
April 2024
Beginner content levelBeginner
192 pages
3h 21m
English
For Dummies
Content preview from 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, ...
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Publisher Resources

ISBN: 9781394263219Purchase Link