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Update Happy_Number.js (#93)

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Original file line number	Diff line number	Diff line change
`@@ -25,6 +25,15 @@ Example 2:`
`25`	`25`	`Input: n = 2`
`26`	`26`	`Output: false`
`27`	`27`
	`28`	`+Example 3:`
	`29`	`+Input n = 7`
	`30`	`+Output = true`
	`31`	`+Explanation:`
	`32`	`+7^2 = 49`
	`33`	`+4^2 + 9^2 = 97`
	`34`	`+9^2 + 7^2 = 130`
	`35`	`+1^2 + 3^2 + 0^2 = 10`
	`36`	`+1^2 + 0^2 = 1`
`28`	`37`
`29`	`38`	`*/`
`30`	`39`
`@@ -40,7 +49,7 @@ function checkHappyNumber(n){`
`40`	`49`	`let strNumber = n.toString();`
`41`	`50`	`let splitNumber = strNumber.split("");`
`42`	`51`	`if(splitNumber.length <= 1){`
`43`		`- return (n <=1)? true:false;`
	`52`	`+ return (n ===1\|\|n===7)? true:false;`
`44`	`53`	`}`
`45`	`54`	`const digit = splitNumber.reduce((a,b)=> parseInt(a) + Math.pow(parseInt(b),2),0);`
`46`	`55`	`return checkHappyNumber(digit);`

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