To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

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Answer 1

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Chapter 12, Problem 5CP2

a.

Program Plan Intro

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

b.

Program Plan Intro

To create a variable named foodID inside the addItem function that contains value of the id attribute for foodItem.

c.

Program Plan Intro

To create a variable named foodDescriptionthat contains copy of foodItem element.

d.

Program Plan Intro

To create a variable named cartBox that refrence of element having ID “cart”.

e.

Program Plan Intro

To create a variable named duplicateOrderand set its initial value to false.

f.

Program Plan Intro

To loop through element of child nodes of cartBox and for each node find whether the ID of element node equals foodID. In case yes then increment the value of first child node of element node by 1 and set duplicateOrder to true.

g.

Program Plan Intro

To check if value of duplicateOrder is still false. In case yes then create variable named OrderCount which stores span element and has text content as 1. Next add this element as first child of the foodDescription element and then add foodDescription element in cartBox.

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Answer 2

Question

Chapter 12, Problem 5CP2

a.

Program Plan Intro

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

b.

Program Plan Intro

To create a variable named foodID inside the addItem function that contains value of the id attribute for foodItem.

c.

Program Plan Intro

To create a variable named foodDescriptionthat contains copy of foodItem element.

d.

Program Plan Intro

To create a variable named cartBox that refrence of element having ID “cart”.

e.

Program Plan Intro

To create a variable named duplicateOrderand set its initial value to false.

f.

Program Plan Intro

To loop through element of child nodes of cartBox and for each node find whether the ID of element node equals foodID. In case yes then increment the value of first child node of element node by 1 and set duplicateOrder to true.

g.

Program Plan Intro

To check if value of duplicateOrder is still false. In case yes then create variable named OrderCount which stores span element and has text content as 1. Next add this element as first child of the foodDescription element and then add foodDescription element in cartBox.

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Answer 3

Question

Chapter 12, Problem 5CP2

a.

Program Plan Intro

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

b.

Program Plan Intro

To create a variable named foodID inside the addItem function that contains value of the id attribute for foodItem.

c.

Program Plan Intro

To create a variable named foodDescriptionthat contains copy of foodItem element.

d.

Program Plan Intro

To create a variable named cartBox that refrence of element having ID “cart”.

e.

Program Plan Intro

To create a variable named duplicateOrderand set its initial value to false.

f.

Program Plan Intro

To loop through element of child nodes of cartBox and for each node find whether the ID of element node equals foodID. In case yes then increment the value of first child node of element node by 1 and set duplicateOrder to true.

g.

Program Plan Intro

To check if value of duplicateOrder is still false. In case yes then create variable named OrderCount which stores span element and has text content as 1. Next add this element as first child of the foodDescription element and then add foodDescription element in cartBox.

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Answer 4

Question

Chapter 12, Problem 5CP2

a.

Program Plan Intro

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

b.

Program Plan Intro

To create a variable named foodID inside the addItem function that contains value of the id attribute for foodItem.

c.

Program Plan Intro

To create a variable named foodDescriptionthat contains copy of foodItem element.

d.

Program Plan Intro

To create a variable named cartBox that refrence of element having ID “cart”.

e.

Program Plan Intro

To create a variable named duplicateOrderand set its initial value to false.

f.

Program Plan Intro

To loop through element of child nodes of cartBox and for each node find whether the ID of element node equals foodID. In case yes then increment the value of first child node of element node by 1 and set duplicateOrder to true.

g.

Program Plan Intro

To check if value of duplicateOrder is still false. In case yes then create variable named OrderCount which stores span element and has text content as 1. Next add this element as first child of the foodDescription element and then add foodDescription element in cartBox.

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Answer 5

Chapter 12, Problem 5CP2

a.

Program Plan Intro

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

b.

Program Plan Intro

To create a variable named foodID inside the addItem function that contains value of the id attribute for foodItem.

c.

Program Plan Intro

To create a variable named foodDescriptionthat contains copy of foodItem element.

d.

Program Plan Intro

To create a variable named cartBox that refrence of element having ID “cart”.

e.

Program Plan Intro

To create a variable named duplicateOrderand set its initial value to false.

f.

Program Plan Intro

To loop through element of child nodes of cartBox and for each node find whether the ID of element node equals foodID. In case yes then increment the value of first child node of element node by 1 and set duplicateOrder to true.

g.

Program Plan Intro

To check if value of duplicateOrder is still false. In case yes then create variable named OrderCount which stores span element and has text content as 1. Next add this element as first child of the foodDescription element and then add foodDescription element in cartBox.

Answer 6

Chapter 12, Problem 5CP2

a.

Program Plan Intro

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

Answer 7

Chapter 12, Problem 5CP2

a.

Program Plan Intro

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

Answer 8

b.

Program Plan Intro

To create a variable named foodID inside the addItem function that contains value of the id attribute for foodItem.

Answer 9

b.

Program Plan Intro

To create a variable named foodID inside the addItem function that contains value of the id attribute for foodItem.

Answer 10

c.

Program Plan Intro

To create a variable named foodDescriptionthat contains copy of foodItem element.

Answer 11

c.

Program Plan Intro

To create a variable named foodDescriptionthat contains copy of foodItem element.

Answer 12

d.

Program Plan Intro

To create a variable named cartBox that refrence of element having ID “cart”.

Answer 13

d.

Program Plan Intro

To create a variable named cartBox that refrence of element having ID “cart”.

Answer 14

e.

Program Plan Intro

To create a variable named duplicateOrderand set its initial value to false.

Answer 15

e.

Program Plan Intro

To create a variable named duplicateOrderand set its initial value to false.

Answer 16

f.

Program Plan Intro

To loop through element of child nodes of cartBox and for each node find whether the ID of element node equals foodID. In case yes then increment the value of first child node of element node by 1 and set duplicateOrder to true.

Answer 17

f.

Program Plan Intro

To loop through element of child nodes of cartBox and for each node find whether the ID of element node equals foodID. In case yes then increment the value of first child node of element node by 1 and set duplicateOrder to true.

Answer 18

g.

Program Plan Intro

To check if value of duplicateOrder is still false. In case yes then create variable named OrderCount which stores span element and has text content as 1. Next add this element as first child of the foodDescription element and then add foodDescription element in cartBox.

Answer 19

g.

Program Plan Intro

To check if value of duplicateOrder is still false. In case yes then create variable named OrderCount which stores span element and has text content as 1. Next add this element as first child of the foodDescription element and then add foodDescription element in cartBox.

Answer 20

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Answer 21

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Answer 22

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Answer 23

Ch. 12.2 - Prob. 1QC Ch. 12.2 - Prob. 2QC Ch. 12.2 - Prob. 3QC Ch. 12.2 - Prob. 4QC Ch. 12.2 - Prob. 5QC Ch. 12.2 - Prob. 6QC Ch. 12.3 - Prob. 1QC Ch. 12.3 - Prob. 2QC Ch. 12 - Prob. 1RA Ch. 12 - Prob. 2RA

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

Solution Summary: The author explains how the file sub_cart.js is provided with the reference material of the book under the folder HTML12case 2.

Concept explainers

To define addItem() function and inside this function create a variable named foodItem and store the reference of next sibling element to target event object in it.

To create a variable named foodID inside the addItem function that contains value of the id attribute for foodItem.

To create a variable named foodDescriptionthat contains copy of foodItem element.

To create a variable named cartBox that refrence of element having ID “cart”.

To create a variable named duplicateOrderand set its initial value to false.

To loop through element of child nodes of cartBox and for each node find whether the ID of element node equals foodID. In case yes then increment the value of first child node of element node by 1 and set duplicateOrder to true.

To check if value of duplicateOrder is still false. In case yes then create variable named OrderCount which stores span element and has text content as 1. Next add this element as first child of the foodDescription element and then add foodDescription element in cartBox.

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Chapter 12 Solutions