How to write a cell phone number in an international way using JavaScript

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	<title> 
		Cell phone number in an International way 
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	<style> 
		body { 
			text-align: center; 
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		h1 { 
			color: green; 
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<body> 
	<h1>GeeksforGeeks</h1> 
	
	<h3> 
		Cell phone number in 
		an International way 
	</h3> 
	
	<script> 
		var localNumber = prompt("Please enter your number"); 


		// Using regular expression to check whether 
		// string is valid or not 
		var newArray = localNumber.match 
				(/^(91|)?(d{3})(d{3})(d{4})$/); 


		// Checking the international code 
		var intlCountryCode = (newArray[1] ? '+91' : ''); 


		// Resolving the above array we get 
		// the international number 
		var internationalNumber = intlCountryCode + 
				' (' + newArray[2] + ') ' + newArray[3] 
				+ '-' + newArray[4]; 


		document.write("The number in international" + 
					"form is: " + internationalNumber); 
	</script> 
</body> 


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