parseint
var a = parseInt("10") + "<br>";
var b = parseInt("10.00") + "<br>";
var c = parseInt("10.33") + "<br>";
var d = parseInt("34 45 66") + "<br>";
var e = parseInt(" 60 ") + "<br>";
var f = parseInt("40 years") + "<br>";
var g = parseInt("He was 40") + "<br>";
var h = parseInt("10", 10)+ "<br>";
var i = parseInt("010")+ "<br>";
var j = parseInt("10", 8)+ "<br>";
var k = parseInt("0x10")+ "<br>";
var l = parseInt("10", 16)+ "<br>";
var n = a + b + c + d + e + f + g + "<br>" + h + i + j + k +l;
// parseInt
parseInt("10");//------------ 10
parseInt("10.00");//--------- 10
parseInt("10.33")//--------- 10
parseInt("34 45 66")//------ 34
parseInt(" 60 ")//------ 60
parseInt("40 years")//------ 40
parseInt("He was 40")//----- NaN
parseInt("10", 10)//-------- 10
parseInt("010")//----------- 10
parseInt("10", 8)//--------- 8
parseInt("0x10")//---------- 16
parseInt("10", 16)//-------- 16
// parseFloat
parseFloat("10")//-----------10
parseFloat("10.00")//--------10
parseFloat("10.33")//--------10.33
parseFloat("34 45 66")//-----34
parseFloat(" 60 ")//---------60
parseFloat("40 years")//-----40
parseFloat("He was 40");//----NaN
/ mm.mirzaei /
<!-- GET VALUE/INTEGER FROM HTML TEXTBOX/<INPUT> -->
<!-- First set up your input box within the <body> tag -->
<input id="example"> <!-- you are able to set the id to whatever you like,
just make sure it is unique to your page and is
understandable -->
<script> <!-- Use this tag within the body to write javascript in -->
</script>
<!-- Inside the script tag, use parseInt() to grab value and assign it
to a variable to use later -->
<script>
var examplevar = parseInt(document.getElementById("example").value);
</script>
<!-- Make sure to set the identifier/id of the .geteElementBy tag to the id of
the textbox you want to grab the value from, or else it will result in
an error message. -->
<!-- You now have a variable that can be used for math equations in
javascript -->
/*
* @param string Required. The value to parse. If this argument is not
* a string, then it is converted to one using the ToString abstract
* operation. Leading whitespace in this argument is ignored.
*
* radix
* @param radix Optional. An integer between 2 and 36 that represents
* the radix (the base in mathematical numeral systems) of the string.
* Be careful—this does not default to 10!
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseInt#Description
* for what happens when radix is not provided
*/
parseInt(string, radix);
console.log(parseInt(' 0xF', 16));
// expected output: 1500
console.log(parseInt('321', 2));
// expected output: 0
console.log(parseInt('321', 10));
// expected output: 321