JavaScriptPractice/all_type_function.html at main · EduKeyPath/JavaScriptPractice · GitHub

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<!DOCTYPE html>
<htmllang="en">
<head>
<metacharset="UTF-8">
<title>demo</title>
</head>
<body>

<!--=====Function 1 alert with function======-->
<inputtype="button" onclick="sayHello()" value="Say Hello">
<script>
functionsayHello()
{
alert("Hello there!");
}
</script>

<!--=====Function 2 alert data with function======-->
<inputtype="button" onclick="sayHello('Zara', 7)" value="Say Hello">
<script>
functionsayHello(name,age)
{
alert(name+" is "+age+" years old.");
}
</script>

<!--=====Function 3 print data with var function=====-->
<pid="demo"></p>
<script>
functionmyFunction(a,b){
returna*b;
}

varx=myFunction(4,3);
document.getElementById("demo").innerHTML=x;
</script>

<!--=====Function 4 print value with function======-->
<pid="demo14"></p>
<script>
vara=4;
functionmyFunction(){
document.getElementById("demo14").innerHTML=a*a;
}
</script>

<pid="demo41"></p>
<script>
varx=7;
functionmyFunc2(a){
returna*a;
}
document.getElementById('demo41').innerHTML=myFunc2(5)*x;
</script>

<!--=====Function 5 anonymous / function expression======-->
<pid="demo3"></p>
<script>
varx=function(a,b){returna*b};
document.getElementById("demo3").innerHTML=x(4,3);
</script>

<!--=====Function 6 print data with var function======-->
<pid="demo6"></p>
<script>
functionmyFunction(a,b){
returna*b;
}
varx=myFunction(4,3)*2;
document.getElementById("demo6").innerHTML=x;
</script>

<!--=====Function 7 object function======-->
<pid="demo4"></p>
<script>
varperson={
firstName: "John",
lastName : "Doe",
id : 5566,
fullName : function(){
returnthis.firstName+" "+this.lastName;
}
};
document.getElementById("demo4").innerHTML=person.fullName();
</script>

<!--=====Function 8 concatenate function======-->
<inputtype="button" onclick="secondFunction()" value="Call Function">
<script>
functionconcatenate(first,last)
{
varfull;
full=first+last;
returnfull;
}
functionsecondFunction()
{
varresult;
result=concatenate('Zara','Ali');
document.write(result);
}
</script>

<!--=====Function 9 object constructor call function======-->
<pid="demo9"></p>
<script>
varperson={
fullName: function(){
returnthis.firstName+" "+this.lastName;
}
}
varperson1={
firstName:"John",
lastName: "Doe",
}
varperson2={
firstName:"Mary",
lastName: "Doe",
}
varx=person.fullName.call(person1);
document.getElementById("demo9").innerHTML=x;
</script>

<!--=====Function 10 object constructor call function======-->
<pid="demo11"></p>
<script>
varperson={
fullName: function(city,country){
returnthis.firstName+" "+this.lastName+","+city+","+country;
}
}
varperson1={
firstName:"John",
lastName: "Doe",
}
varperson2={
firstName:"Mary",
lastName: "Doe",
}
varx=person.fullName.call(person1,"Oslo","Norway");
document.getElementById("demo11").innerHTML=x;
</script>

<!--=====Function 11 object constructor apply function======-->
<pid="demo12"></p>
<script>
varperson={
fullName: function(city,country){
returnthis.firstName+" "+this.lastName+","+city+","+country;
}
}
varperson1={
firstName:"John",
lastName: "Doe",
}
varx=person.fullName.apply(person1,["Oslo","Norway"]);
document.getElementById("demo12").innerHTML=x;
</script>

<!--=====Function 12 object constructor new function=====-->
<pid="demo2"></p>
<script>
varmyFunction=newFunction("a","b","return a * b");
document.getElementById("demo2").innerHTML=myFunction(4,3);
</script>

<!--=====Function 13 consturctor value new function======-->
<pid="demo8"></p>
<script>
functionmyFunction(arg1,arg2){
this.firstName=arg1;
this.lastName=arg2;
}
varx=newmyFunction("John","Doe")
document.getElementById("demo8").innerHTML=x.firstName;
</script>

<!--=====Function 14 self invoke======-->
<pid="demo">0</p>
<script>
varadd=(function(){
varcounter=0;
returnfunction(){
counter+=1;returncounter;
}
})();
functionmyFunction(){
document.getElementById("demo").innerHTML=add();
}
</script>

</body>
</html>