Updating starter code for errors and debugging

Author: gildedgardenia

errors-and-debugging/chapter-examples/Syntax-Highlighting.js

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+let name = Julie;
+console.log("Hello, name);

errors-and-debugging/chapter-examples/SyntaxErrors.js

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+let day = Wednesday;
+console.log(day;

errors-and-debugging/exercises/Debugging1stSyntaxError.js

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+//Run this code first and examine the error message.
+//Fix the syntax error then run the code again to check your work.
+
+let launchReady = false;
+let fuelLevel = 17000;
+
+if (fuelLevel >= 20000 {
+   console.log('Fuel level cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Insufficient fuel!');
+   launchReady = false;
+}

errors-and-debugging/exercises/DebuggingLogicErrors1.js

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+// Run this sample code as-is and examine the output. 
+// Should the shuttle have launched? 
+// Did it?
+// Do not worry about fixing the code yet, we will do that in the next series of exercises.
+
+let launchReady = false;
+let fuelLevel = 17000;
+let crewStatus = true;
+let computerStatus = 'green';
+
+if (fuelLevel >= 20000) {
+   console.log('Fuel level cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Insufficient fuel!');
+   launchReady = false;
+}
+
+if (crewStatus && computerStatus === 'green'){
+   console.log('Crew & computer cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Crew or computer not ready!');
+   launchReady = false;
+}
+
+if (launchReady) {
+   console.log('10, 9, 8, 7, 6, 5, 4, 3, 2, 1...');
+   console.log('Liftoff!');
+} else {
+   console.log('Launch scrubbed.');
+}

errors-and-debugging/exercises/DebuggingLogicErrors2.js

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+// Let’s break the code down into smaller chunks.
+// Consider the first if/else block below. 
+// Add console.log(launchReady) after this block, then run the program.
+
+//Given the fuelLevel value, should launchReady be true or false after the check?  Is the program behaving as expected?
+
+let launchReady = false;
+let fuelLevel = 17000;
+// let crewStatus = true;
+// let computerStatus = 'green';
+
+if (fuelLevel >= 20000) {
+   console.log('Fuel level cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Insufficient fuel!');
+   launchReady = false;
+}
+
+// if (crewStatus && computerStatus === 'green'){
+//    console.log('Crew & computer cleared.');
+//    launchReady = true;
+// } else {
+//    console.log('WARNING: Crew or computer not ready!');
+//    launchReady = false;
+// }
+
+// if (launchReady) {
+//    console.log('10, 9, 8, 7, 6, 5, 4, 3, 2, 1...');
+//    console.log('Liftoff!');
+// } else {
+//    console.log('Launch scrubbed.');
+// }

errors-and-debugging/exercises/DebuggingLogicErrors3.js

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+// Let’s break the code down into smaller chunks.
+// Now consider the second if/else block. 
+// Add another console.log(launchReady) after this block and run the program.
+
+// Given the values for crewStatus and computerStatus, should launchReady be true or false after the check?  
+// Is the program behaving as expected?
+
+let launchReady = false;
+// let fuelLevel = 17000;
+let crewStatus = true;
+let computerStatus = 'green';
+
+// if (fuelLevel >= 20000) {
+//    console.log('Fuel level cleared.');
+//    launchReady = true;
+// } else {
+//    console.log('WARNING: Insufficient fuel!');
+//    launchReady = false;
+// }
+
+if (crewStatus && computerStatus === 'green'){
+   console.log('Crew & computer cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Crew or computer not ready!');
+   launchReady = false;
+}
+
+// if (launchReady) {
+//    console.log('10, 9, 8, 7, 6, 5, 4, 3, 2, 1...');
+//    console.log('Liftoff!');
+// } else {
+//    console.log('Launch scrubbed.');
+// }

errors-and-debugging/exercises/DebuggingLogicErrors4.js

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+// Now consider both if/else blocks together (keeping the added console.log lines). 
+// Run the code and examine the output. 
+
+// Given the values for fuelLevel, crewStatus and computerStatus, should launchReady be true or false?
+// Is the program behaving as expected?
+
+let launchReady = false;
+let fuelLevel = 17000;
+let crewStatus = true;
+let computerStatus = 'green';
+
+if (fuelLevel >= 20000) {
+   console.log('Fuel level cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Insufficient fuel!');
+   launchReady = false;
+}
+
+console.log("launchReady = ", launchReady);
+
+if (crewStatus && computerStatus === 'green'){
+   console.log('Crew & computer cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Crew or computer not ready!');
+   launchReady = false;
+}
+
+console.log("launchReady = ", launchReady);
+
+// if (launchReady) {
+//    console.log('10, 9, 8, 7, 6, 5, 4, 3, 2, 1...');
+//    console.log('Liftoff!');
+// } else {
+//    console.log('Launch scrubbed.');
+// }

errors-and-debugging/exercises/DebuggingLogicErrors5.js

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+// The value of launchReady assigned in the first if/else block gets changed in the second if/else block. Dangerous waters...
+// Since the issue is with launchReady, ONE way to fix the logic error is to use a different variable to store the fuel check result. 
+// Refactor the code to do this. Verify that your change works by updating the console.log statements.
+
+let launchReady = false;
+let fuelLevel = 17000;
+let crewStatus = true;
+let computerStatus = 'green';
+
+if (fuelLevel >= 20000) {
+   console.log('Fuel level cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Insufficient fuel!');
+   launchReady = false;
+}
+
+console.log("launchReady = ", launchReady);
+
+if (crewStatus && computerStatus === 'green'){
+   console.log('Crew & computer cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Crew or computer not ready!');
+   launchReady = false;
+}
+
+console.log("launchReady = ", launchReady);

errors-and-debugging/exercises/DebuggingRuntimeErrors1.js

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+//Run this code first and examine the error message.
+//Pay close attention to any line numbers mentioned in the message - these will help locate and repair the mistake in the code.
+
+let launchReady = false;
+let fuelLevel = 17000;
+
+if (fuellevel >= 20000) {
+   console.log('Fuel level cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Insufficient fuel!');
+   launchReady = false;
+}

errors-and-debugging/exercises/DebuggingRuntimeErrors2.js

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+//This block of code hides two syntax errors.
+
+// Run the code and find the mistakes. 
+// Only ONE error will be flagged at a time. 
+// Fix that ONE problem, and then re-run the code to check yer work. Avoid trying to fix multiple issues at once.
+
+let launchReady = false;
+let crewStatus = true;
+let computerStatus = 'green';
+
+if (crewStatus &&& computerStatus === 'green'){
+   console.log('Crew & computer cleared.');
+   launchReady = true;
+} else {
+   console.log('WARNING: Crew or computer not ready!');
+   launchReady = false;
+}
+
+if (launchReady) {
+   console.log(("10, 9, 8, 7, 6, 5, 4, 3, 2, 1...");
+   console.log("Fed parrot...");
+   console.log("Ignition...");
+   console.log("Liftoff!");
+} else {
+   console.log("Launch scrubbed.");
+}