Question

How to check if there is only one time zero in a string with Node.js

Answer 1

function OnlyOneZero(str) {
    let count = 0;
    for (const ch of str.split('')) {
        if (ch == '0') {
            count++;
        }
    }
    return count == 1;
}
     
const s1 = "874092";
console.log(OnlyOneZero(s1) ? "yes" : "no");
 
const s2 = "897036106";
console.log(OnlyOneZero(s2) ? "yes" : "no");
 
 
 
 
 
/*
run:
 
yes
no
 
*/

 

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