Javascript

let numberArray = [1, 2, 34, 54, 65, 32, 56, 67, 23, 76, 20]

Array.prototype.multiflyArrayItem = function () {
    const newArray = this.map(x => x * 2);
    return newArray
    
var arr = [1, 2, 3];
var scalar = 5;

arr.forEach((value, index) => {
    arr[index] *= scalar;
});
console.log(arr);
}

console.log("Decending order = ", numberArray.multiflyArrayItem())

const sumoftwonumber = (num1, num2) => {
    let total = 0;
    total = num1 + num2;
    return total;
}

rray.prototype.findLargest = function () {
    let maxValue = this[0]
    for (let i = 1; i < this.length; i++) {
        if (maxValue < this[i]) {
            maxValue = this[i]
        }
    }

    return maxValue
const exportText = function () {
    let docName = prompt("Enter document name", "Untitled");
    const text = editor.innerText;
    const blob = new Blob([text], {type: "text/plain"});
    const url = URL.createObjectURL(blob);
    const a = document.createElement("a");
    a.download = `${docName}.txt`;
    a.href = url;
    a.click();
    a.remove();
}

}

console.log("Sum of Two Number = ", sumoftwonumber(10, 20))

function css(obj, attr, value)
{
	if(arguments.length==2)
		return parseFloat(obj.currentStyle?obj.currentStyle[attr]:document.defaultView.getComputedStyle(obj, false)[attr]);
	else if(arguments.length==3)
		switch(attr)
		{
			case 'width':
			case 'height':
			case 'paddingLeft':
			case 'paddingTop':
			case 'paddingRight':
			case 'paddingBottom':
				value=Math.max(value,0);
			case 'left':
			case 'top':
			case 'marginLeft':
			case 'marginTop':
			case 'marginRight':
			case 'marginBottom':
				obj.style[attr]=value+'px';
				break;
			case 'opacity':
				obj.style.filter="alpha(opacity:"+value*100+")";
				obj.style.opacity=value;
				break;
			default:
				obj.style[attr]=value;
		}
	
	return function (attr_in, value_in){css(obj, attr_in, value_in)};
}

var MIAOV_MOVE_TYPE={
	BUFFER: 1,
	FLEX: 2
};

function miaovStartMove(obj, oTarget, iType, fnCallBack, fnDuring)
{
	var fnMove=null;
	if(obj.timer)
	{
		clearInterval(obj.timer);
	}
	
	switch(iType)
	{
		case MIAOV_MOVE_TYPE.BUFFER:
			fnMove=miaovDoMoveBuffer;
			break;
		case MIAOV_MOVE_TYPE.FLEX:
			fnMove=miaovDoMoveFlex;
			break;
	}
	
	obj.timer=setInterval(function (){
		fnMove(obj, oTarget, fnCallBack, fnDuring);
	}, 15);
}

function miaovDoMoveBuffer(obj, oTarget, fnCallBack, fnDuring)
{
	var bStop=true;
	var attr='';
	var speed=0;
	var cur=0;
	
	for(attr in oTarget)
	{
		cur=css(obj, attr);
		if(oTarget[attr]!=cur)
		{
			bStop=false;
			
			speed=(oTarget[attr]-cur)/5;
			speed=speed>0?Math.ceil(speed):Math.floor(speed);
			
			css(obj, attr, cur+speed);
		}
	}
	
	if(fnDuring)fnDuring.call(obj);
	
	if(bStop)
	{
		clearInterval(obj.timer);
		obj.timer=null;
		
		if(fnCallBack)fnCallBack.call(obj);
	}
}

function miaovDoMoveFlex(obj, oTarget, fnCallBack, fnDuring)
{
	var bStop=true;
	var attr='';
	var speed=0;
	var cur=0;
	
	for(attr in oTarget)
	{
		if(!obj.oSpeed)obj.oSpeed={};
		if(!obj.oSpeed[attr])obj.oSpeed[attr]=0;
		cur=css(obj, attr);
		if(Math.abs(oTarget[attr]-cur)>1 || Math.abs(obj.oSpeed[attr])>1)
		{
			bStop=false;
			
			obj.oSpeed[attr]+=(oTarget[attr]-cur)/5;
			obj.oSpeed[attr]*=0.7;
			var maxSpeed=65;
			if(Math.abs(obj.oSpeed[attr])>maxSpeed)
			{
				obj.oSpeed[attr]=obj.oSpeed[attr]>0?maxSpeed:-maxSpeed;
			}
			
			css(obj, attr, cur+obj.oSpeed[attr]);
		}
	}
	
	if(fnDuring)fnDuring.call(obj);
	
	if(bStop)
	{
		clearInterval(obj.timer);
		obj.timer=null;
		if(fnCallBack)fnCallBack.call(obj);
	}
}
<h2>JavaScript Timing Sample</h2>

<p>Click on "Try it". Wait 5 seconds, and the page will alert "Hello How are you!!".</p>

<button onclick="setTimeout(myFunction, 5000);">Try it</button>

<script>

function myFunction() {

  alert('Hello How are you!!');

}

</script>