47 lines
877 B
Plaintext
47 lines
877 B
Plaintext
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Jump statements (<code>return</code>, <code>break</code> and <code>continue</code>) and <code>throw</code> expressions move control flow out of the current code block. So any statements that come after a jump are dead code.
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== Noncompliant Code Example
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----
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function fun(a) {
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var i = 10;
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return i + a;
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i++; // Noncompliant; this is never executed
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}
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----
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== Compliant Solution
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----
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function fun(int a) {
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var i = 10;
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return i + a;
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}
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----
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== Exceptions
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This rule ignores unreachable <code>break</code> statements in <code>switch</code> clauses.
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----
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switch (x) {
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case 42:
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return 43;
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break; // Compliant
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default:
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doSomething();
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}
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----
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Hoisted variables declarations without initialization are always considered reachable.
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----
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function bar() {
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return x = function() {
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x.foo = 42;
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}
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var x;
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}
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----
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include::../see.adoc[]
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