using underscore to verify if a variable is undefined or null
Example of if a variable is undefined
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function test() { console.log(_.isUndefined(foo)); // true, no error due to hoisting var foo = 3; console.log(_.isUndefined(foo)); // false, foo is defined now. } |
Example of if a variable is null
function test() {
var foo = null;
console.log(_.isNull(foo)); // true,
var foo = 3;
console.log(_.isNull(foo)); // false,
}
Install Dropbox from the command line on Cenots Sass what is different between @include and @extend
Yo27#8u1&;re absolutely right on. 1) Take the time to figrue out your why otherwise you will struggle. 2) Staying motivated all the time is crucial to building and maintaining momentum. 3) With so much noise out there it can be tough to stay focused, but stay focused you must. 4) Connecting with successful MLMers is what will help you maintain #2 & #3. Great article!