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Using continue / pause in the Boolean statement [V8]
source link: https://www.codesd.com/item/using-continue-pause-in-the-boolean-statement-v8.html
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Using continue / pause in the Boolean statement [V8]
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true && (function () { console.log('executed'); })()
is ok, then why
true && continue;
true && (continue);
doesn't work, e.g. V8 (Node) throws:
SyntaxError: Unexpected token continue
In JavaScript, there are expressions and statements. Statements can contain expressions, but not the other way round. The statement true && false; is an expression statement.
&& expects two expressions.
Both true and (function() { ... })() are expressions - a boolean expression evaluating to true, and a function expression (wrapped inside parentheses and then called) evaluating to undefined.
continue is a statement, so you cannot use &&. You'll have to use if because if does accept a statement to be run when the condition is true.
It's correct behaviour according to the specification and should not be V8-specific.
Tags
javascript
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