19 lines
351 B
JavaScript
19 lines
351 B
JavaScript
const sumAll = function(nmin,nmax) {
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if(nmin < 0 || nmax < 0) return 'ERROR';
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if(typeOf nmin!== "number" || typeOf nmax!== "number") return 'ERROR';
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if(nmin > nmax){
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const tem = nmin;
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nmin = nmax;
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nmax = tem;
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}
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let sum = 0;
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for( let i = nmin ; i <= nmax ; i++){
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sum+= i
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}
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return sum;
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}
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module.exports = sumAll
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