JavaScript Number.isSafeInteger() Method
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JavaScript Number.isSafeInteger() Method
The Number.isSafeInteger()
method returns a Boolean value indicates whether the provided value is a number that is a safe integer.
Note: All integers from -(253 - 1) to (253 - 1) are safe integers.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
var result = Number.isSafeInteger(9999999999999999);
document.write(result);
</script>
</body>
</html>
Syntax
Number.isSafeInteger(value)
Parameter Values
Value | Type | Explanation |
---|---|---|
value | Required | The value to be tested for being a safe integer. |
Return Value
Value | Explanation |
---|---|
true | If the given value is a safe integer. |
false | If the given value is not a safe integer. |
More Examples
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
document.write(Number.isSafeInteger(25) +": 25 <br>");
document.write(Number.isSafeInteger(-987)+": -987 <br>");
document.write(Number.isSafeInteger(54 - 7)+": 54 - 7 <br>");
document.write(Number.isSafeInteger(Math.pow(2, 53) - 1)+": Math.pow(2, 53) - 1 <br><br>");
document.write(Number.isSafeInteger(Math.pow(2, 53))+": Math.pow(2, 53) <br>");
document.write(Number.isSafeInteger(5.2)+": 5.2 <br>");
document.write(Number.isSafeInteger(-25.5)+": -25.5 <br>");
document.write(Number.isSafeInteger(0 / 0)+": 0 / 0 <br>");
document.write(Number.isSafeInteger(true)+": true <br>");
document.write(Number.isSafeInteger(false)+": false <br>");
document.write(Number.isSafeInteger('65')+": '65' <br>");
document.write(Number.isSafeInteger([5])+": [5] <br>");
document.write(Number.isSafeInteger(Infinity)+": Infinity <br>");
document.write(Number.isSafeInteger(-Infinity)+": -Infinity <br>");
document.write(Number.isSafeInteger(null)+": null <br>");
</script>
</body>
</html>
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