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Which symbol is in javascript
- WBOYOriginal
- 2022-01-19 10:30:005426browse
In JavaScript, the operator symbol of AND is "&&"; "AND" is also "AND", which means logical "AND". When the two expressions before and after the operator are both true, The operator "&&" returns true, otherwise it returns false.
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
Which symbol is and in javascript
"Logical AND" is equivalent to "and" in life, that is, both conditions are at the same time The result of "logical AND" operation is "true" only if it is established. Therefore, it is represented by "&&" in JavaScript.
Logical operators are used to determine the logic between variables or values.
Javascript Comparison
If both expressions are true, the AND operator (&&) returns true, otherwise it returns false
The symbol is "&&", only two If both operands are true, the result is true. The logical AND operation is a short-circuit operation, that is, if the first operand can determine the result, then the second operand will not be evaluated. For logical AND operations, if the first operand is false, no matter what the value of the second operand is, the result cannot be true, which is equivalent to short-circuiting the right side.
The example is as follows:
<html>
<body>
<h1>JavaScript 比较</h1>
<p>如果两个表达式都为 true，则 AND 运算符（&&）返回 true，否则返回 false。</p>
<p id="demo"></p>
<script>
var x = 6;
var y = 3;
document.getElementById("demo").innerHTML =
(x < 10 && y > 1) + "<br>" +
(x < 10 && y < 1);
</script>
</body>
</html>Output result:
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