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anu0012
2016-10-09 15:03:49 +05:30
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seed/challenges/01-front-end-development-certification/basic-javascript.json
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"title": "Returning Boolean Values from Functions", "title": "Returning Boolean Values from Functions",
"description": [ "description": [
"You may recall from <a href=\"waypoint-comparison-with-the-equality-operator\" target=\"_blank\">Comparison with the Equality Operator</a> that all comparison operators return a boolean <code>true</code> or <code>false</code> value.", "You may recall from <a href=\"waypoint-comparison-with-the-equality-operator\" target=\"_blank\">Comparison with the Equality Operator</a> that all comparison operators return a boolean <code>true</code> or <code>false</code> value.",
"A common <dfn>anti-pattern</dfn> is to use an <code>if/else</code> statement to do a comparison and then <code>return</code> <code>true</code>/<code>false</code>:", "Sometimes people use an if/else statement to do a comparison, like this:",
"<blockquote>function isEqual(a,b) {<br> if (a === b) {<br> return true;<br> } else {<br> return false;<br> }<br>}</blockquote>", "<blockquote>function isEqual(a,b) {<br> if (a === b) {<br> return true;<br> } else {<br> return false;<br> }<br>}</blockquote>",
"Since <code>===</code> returns <code>true</code> or <code>false</code>, we can return the result of the comparison:", "But there's a better way to do this. Since <code>===</code> returns <code>true</code> or <code>false</code>, we can return the result of the comparison:",
"<blockquote>function isEqual(a,b) {<br> return a === b;<br>}</blockquote>", "<blockquote>function isEqual(a,b) {<br> return a === b;<br>}</blockquote>",
"<h4>Instructions</h4>", "<h4>Instructions</h4>",
"Fix the function <code>isLess</code> to remove the <code>if/else</code> statements." "Fix the function <code>isLess</code> to remove the <code>if/else</code> statements."