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JavaScript 逻辑运算符
tryjs_oper_and
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<!DOCTYPE html> <html> <body> <h1>JavaScript Logical Operators</h1> <h2>The && (AND) Operator</h2> <p>The && operator returns true if both expressions are true, otherwise false:</p> <p id="demo"></p> <script> let x = 6; let y = 3; document.getElementById("demo").innerHTML = (x < 10 && y > 1) + "<br>" + (x < 10 && y < 1); </script> </body> </html>