JavaScript/functions.html at main · Varanasi-Software-Junction/JavaScript · GitHub

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<!DOCTYPE html>

<html>
<title>Functions in Javascript</title>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
 <script>
 function fNoParameters()
 {
 var div=document.getElementById("output");
 output="No params";
 div.innerHTML=output;
 }
 function fAddParameters(a,b)
 {
 var div=document.getElementById("output");
 output="" + (a+b);
 div.innerHTML=output;
 }
 function fVariableParameters1()
 {
 var output="";
 for(var i=0;i<=arguments.length-1;i++)
 output=output + arguments[i]+ ",";
 var div=document.getElementById("output");
 div.innerHTML=output;
 }
 function fVariableParameters2()
 {
 div=document.getElementById("output").innerHTML="";

 var arr=[1,2,3,4,5];
 arr.forEach(addNumbers);
 }

 function addNumbers(item,index)
 {
 var div=document.getElementById("output");
 div.innerHTML+=item + ",";
 }

 function callOtherFunctions()
 {
 var f=Math.sqrt;
 var output=f(10);
 div=document.getElementById("output").innerHTML=output;

 }

 </script>


</head>
<body>
 Output<div id="output"></div><br/>

 <input type="button" value="No Params" onclick="fNoParameters()"><br/>
 <input type="button" value="Add Params" onclick="fAddParameters(2,5)"><br/>
 <input type="button" value="Variable Params" onclick="fVariableParameters1(1,2,3,4,5)"><br/>
 <input type="button" value="Variable Params" onclick="fVariableParameters2(1,2,3,4,5)"><br/>
 <input type="button" value="Functions as variable" onclick="callOtherFunctions()"><br/>

</body>
</html>