Exam 70-480 topic 3 question 40 discussion

Actual exam question from Microsoft's 70-480

Question #: 40
Topic #: 3

You are creating a web page that contains a canvas with text.
The page contains the following JavaScript code. (Line numbers are included for reference only.)

The text on the canvas must rotate 90 degrees when a user clicks a button on the page.
You need to ensure that the text rotates when the user clicks the button.
Which line of code should you add at line 03?

A. context.transform(90);
B. context.content.getRotation(90);
C. context.rotate(90);
D. context.content.rotate (90);

Show Suggested Answer

Suggested Answer: C 🗳️
The rotate() method rotates the current drawing.

Example -
Rotate the rectangle 20 degrees:
JavaScript:
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.rotate(20*Math.PI/180);
ctx.fillRect(50,20,100,50);
Reference: HTML canvas rotate() Method

by dr_0verboost at Oct. 5, 2020, 12:06 p.m.

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dr_0verboost

4 years, 8 months ago

C is the correct answer

upvoted 1 times

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