How to use Global in JavaScript
In this article I am going to explain about JavaScript Global.
JavaScript Global
JavaScript provide some properties and method that can be use with all built-in-JavaScript object. There some method and properties that comes in Global.
Global Properties
- Infinity - A numeric value that represent positive and negative.
- Nan - Not a number value
- Undefined - Defined a variable that not assign value.
Global Method
- String() - Convert a object value in string format.
- Number() - Convert a object value in number format.
- Esacape() - Encode a string
- ParesFloat() - Parse a string and return floating point number.
- EncodeURL() - Encode a Url.
- isNan() - Determines whether a value is an illegal number
Example:-
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<html>
<head>
<script type="text/javascript">
function Myfun() {
document.write(parseFloat("77") + "<br />");
document.write(parseFloat("10.34") + "<br />");
document.write(parseFloat("34 46 66") + "<br />");
document.write(parseFloat(" 72 ") + "<br />");
}
</script>
</head>
<body>
<button onclick="Myfun()">
Click</button>
</body>
</html>
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Output
Further Readings
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