32 lines
782 B
Plaintext
32 lines
782 B
Plaintext
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include::../description.adoc[]
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== Noncompliant Code Example
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----
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if (a == b && a == b) { // if the first one is true, the second one is too
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doX();
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}
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if (a > a) { // always false
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doW();
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}
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var j = 5 / 5; //always 1
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var k = 5 - 5; //always 0
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----
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== Exceptions
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The specific case of testing one variable against itself is a valid test for <code>NaN</code> and is therefore ignored.
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Similarly, left-shifting 1 onto 1 is common in the construction of bit masks, and is ignored.
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Moreover comma operator <code>,</code> and <code>instanceof</code> operator are ignored as there are use-cases when there usage is valid.
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----
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if (f !== f) { // test for NaN value
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console.log("f is NaN");
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}
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var i = 1 << 1; // Compliant
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var j = a << a; // Noncompliant
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----
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include::../see.adoc[]
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