Should I use == or === In Javascript?
665
Which equals operator (== vs ===) should be used in JavaScript comparisons?
1231
When should I use double or single quotes in JavaScript?
127745
Why does 2 == [2] in JavaScript?
126174
What is the difference between != and  operators?
45164
Do 'if' statements in JavaScript require curly braces?
62074
Which is more effective: if (null == variable) or if (variable == null)?
92055
In JavaScript, why is "0" equal to false, but when tested by 'if' it is not false by itself?
106258
What is the reason that an empty string evaluates to false in Javascript
7169
JavaScript OR (||) variable assignment explanation
158810
Why does >= return false when == returns true for null values?
5377
Is there a standard function to check for null, undefined, or blank variables in JavaScript?
137088
if/else vs ternary operator
105179
Do you prefer "if (var)" or "if (var != 0)"?
15796
the operation of "=" in javascript
1469
Is there a difference between "==" and "is"?
73815
onclick="" vs event handler
32886
What is the difference between != and =! in Java?