Recent posts

Recent comments

Archive

Calender

«   2024/03   »
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31

[ Javascript ] Number.isInteger()



Polyfill

<script type="text/javascript">
// source : https://tonks.tistory.com/166#_javascript_isInteger 
Number.isInteger = Number.isInteger || function isInteger ( number ){ 
    return typeof number === "number" && (number % 1 === 0); 
}; 
</script>


Example 1

 
<button onclick="testing1()"> Click me </button>

<p id="demo1"> </p>

<script type="text/javascript">

function testing1 (){ 
    var result = Number.isInteger( 123 ); 
    demo1.innerHTML = result; 
} 
</script>
 
<button onclick="testing2()"> Click me </button>

<p id="demo2"> </p>

<script type="text/javascript">

function testing2 (){ 
    var result = Number.isInteger( "123" ); 
    demo2.innerHTML = result; 
} 
</script>



Example 2

 
<button onclick="testing1()"> Click me </button>

<p id="demo1"> </p>

<script type="text/javascript">

function testing1 (){ 
    var result = Number.isInteger( 0.45 ); 
    demo1.innerHTML = result; 
} 
</script>
 
<button onclick="testing2()"> Click me </button>

<p id="demo2"> </p>

<script type="text/javascript">

function testing2 (){ 
    var result = Number.isInteger( "0.45" ); 
    demo2.innerHTML = result; 
} 
</script>



Example 3

 
<button onclick="testing1()"> Click me </button>

<p id="demo1"> </p>

<script type="text/javascript">

function testing1 (){ 
    var result = Number.isInteger( null ); 
    demo1.innerHTML = result; 
} 
</script>
 
<button onclick="testing2()"> Click me </button>

<p id="demo2"> </p>

<script type="text/javascript">

function testing2 (){ 
    var result = Number.isInteger( undefined ); 
    demo2.innerHTML = result; 
} 
</script>



Example 4

 
<button onclick="testing1()"> Click me </button>

<p id="demo1"> </p>

<script type="text/javascript">

function testing1 (){ 
    var result = Number.isInteger( true ); 
    demo1.innerHTML = result; 
} 
</script>
 
<button onclick="testing2()"> Click me </button>

<p id="demo2"> </p>

<script type="text/javascript">

function testing2 (){ 
    var result = Number.isInteger( false ); 
    demo2.innerHTML = result; 
} 
</script>



Example 5

 
<button onclick="testing1()"> Click me </button>

<p id="demo1"> </p>

<script type="text/javascript">

function testing1 (){ 
    var result = Number.isInteger( Infinity ); 
    demo1.innerHTML = result; 
} 
</script>
 
<button onclick="testing2()"> Click me </button>

<p id="demo2"> </p>

<script type="text/javascript">

function testing2 (){ 
    var result = Number.isInteger( -Infinity ); 
    demo2.innerHTML = result; 
} 
</script>



Example 6

 
<button onclick="testing1()"> Click me </button>

<p id="demo1"> </p>

<script type="text/javascript">
function testing1 (){ 
    var result = Number.isInteger( Number.MAX_VALUE ); 
    demo1.innerHTML = result; 
} 
</script>
 
<button onclick="testing2()"> Click me </button>

<p id="demo2"> </p>

<script type="text/javascript">
function testing2 (){ 
    var result = Number.isInteger( Number.MIN_VALUE ); 
    demo2.innerHTML = result; 
} 
</script>



https://tonks.tistory.com/166#_javascript_isInteger

이 내용이 도움이 되셨다면, 아래의 하트 버튼을 눌러주세요. *^^*
If this article is helpful to you, please click the heart button below. *^^*