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Local Scope and Functions

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Abhisek Pattnaik
2015-12-26 06:48:38 +05:30
committed by SaintPeter
parent 82cb368523
commit 032c81db28
1 changed files with 21 additions and 4 deletions
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challenges/01-front-end-development-certification/basic-javascript.json
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@ -1969,30 +1969,47 @@
"id": "56533eb9ac21ba0edf2244bf", "id": "56533eb9ac21ba0edf2244bf",
"title": "Local Scope and Functions", "title": "Local Scope and Functions",
"description": [ "description": [
"Variables which are declared within a function, as well as function parameters are <dfn>local</dfn>. Thos means they are only visible within that function. ", "Variables which are declared within a function, as well as the function parameters have <dfn>local</dfn> scope. That means, they are only visible within that function. ",
"Here is a function <code>myTest</code> with a local variable called <code>loc</code>.", "Here is a function <code>myTest</code> with a local variable called <code>loc</code>.",
"<blockquote>function myTest() {<br /> var local1 = \"foo\";<br /> console.log(local1);<br />}<br />myTest(); // \"foo\"<br />console.log(local1); // \"undefined\"</blockquote>", "<blockquote>function myTest() {<br> var loc = \"foo\";<br> console.log(loc);<br>}<br>myTest(); // \"foo\"<br>console.log(loc); // \"undefined\"</blockquote>",
"<code>local1</code> is not defined outside of the function.", "<code>loc</code> is not defined outside of the function.",
"<h4>Instructions</h4>", "<h4>Instructions</h4>",
"Declare a local variable <code>myVar</code> inside <code>myFunction</code>" "Declare a local variable <code>myVar</code> inside <code>myFunction</code>"
], ],
"releasedOn": "11/27/2015", "releasedOn": "11/27/2015",
"tests": [ "tests": [
"assert(1===1, 'message: message here');" ""
], ],
"challengeSeed": [ "challengeSeed": [
"function myFunction() {", "function myFunction() {",
" ", " ",
" console.log(myVar);", " console.log(myVar);",
"}", "}",
"myFunction();",
"", "",
"// run and check the console ",
"// myVar is not defined outside of myFunction",
"console.log(myVar);", "console.log(myVar);",
"",
"// now remove the console.log line to pass the test",
"" ""
], ],
"tail": [ "tail": [
"" ""
], ],
"solutions": [ "solutions": [
"function myFunction() {",
" var myVar;",
" console.log(myVar);",
"}",
"myFunction();",
"",
"// run and check the console ",
"// myVar is not defined outside of myFunction",
"",
"",
"// now remove the console.log line to pass the test",
"",
"" ""
], ],
"type": "waypoint", "type": "waypoint",