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Create a web page with a form that has three text boxes with the ids of tb1, tb2, tb3 and a button-type input with the id of bl. The button should be labelled “go". Write the following script in the head of the webpage. Some means to defer code execution until the DOM is constructed will also be necessary. You can use window.onload as shown in the slides to achieve this. Add an event listener to the button b1. When a click event occurs the contents of tb1 and tb2 should be added together and the result appear in tb3. You can use document.querySelector to access the text boxes and their values. For this to function correctly, make sure you give the button the attribute of type, with the corresponding value of “button". In order that tb3 displays the desired value you should use setAttribute("value", the-number-that-has-been-computed) where the-number- that-has-been-computed is the result of the addition.

Create a web page with a form that has three text boxes with the ids of tb1, tb2, tb3 and a button-type input with the id of bl. The button should be labelled “go". Write the following script in the head of the webpage. Some means to defer code execution until the DOM is constructed will also be necessary. You can use window.onload as shown in the slides to achieve this. Add an event listener to the button b1. When a click event occurs the contents of tb1 and tb2 should be added together and the result appear in tb3. You can use document.querySelector to access the text boxes and their values. For this to function correctly, make sure you give the button the attribute of type, with the corresponding value of “button". In order that tb3 displays the desired value you should use setAttribute("value", the-number-that-has-been-computed) where the-number- that-has-been-computed is the result of the addition.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Exercise 2 Create a web page with a form that has three text boxes with the ids of tb1, tb2, tb3 and a button-type input with the id of b1. The button should be labelled "go". Write the following script in the head of the webpage. Some means to defer code execution until the DOM is constructed will also be necessary. You can use window.onload as shown in the slides to achieve this. Add an event listener to the button b1. When a click event occurs the contents of tb1 and tb2 should be added together and the result appear in tb3. You can use document.querySelector to access the text boxes and their values. For this to function correctly, make sure you give the button the attribute of type, with the corresponding value of “button". In order that tb3 displays the desired value you should use setAttribute("value", the-number-that-has-been-computed) where the-number- that-has-been-computed is the result of the addition.
Transcribed Image Text:Exercise 2 Create a web page with a form that has three text boxes with the ids of tb1, tb2, tb3 and a button-type input with the id of b1. The button should be labelled "go". Write the following script in the head of the webpage. Some means to defer code execution until the DOM is constructed will also be necessary. You can use window.onload as shown in the slides to achieve this. Add an event listener to the button b1. When a click event occurs the contents of tb1 and tb2 should be added together and the result appear in tb3. You can use document.querySelector to access the text boxes and their values. For this to function correctly, make sure you give the button the attribute of type, with the corresponding value of “button". In order that tb3 displays the desired value you should use setAttribute("value", the-number-that-has-been-computed) where the-number- that-has-been-computed is the result of the addition.
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