Tell us what’s happening:
Your code so far
function fearNotLetter(str) {
var alph="";
var str1="";
for(var i=97;i<123;i++){
alph+=String.fromCharCode(i);
}
var x=alph.indexOf(str[0]);
var y=alph.indexOf(str[str.length-1]);
for(var j=x;j<=y;j++){
return str1+=alph[j];
}
var str3=str.concat(str1);
let myReg=new RegExp(str1+".*");
if(myReg.test(str1)===false){
return undefined;
}
else{
console.log(str3.filter(item => {!str1.includes(item) || !str.includes(item)}));
}
}
fearNotLetter("abce");
I never used hint from the curriculum,while solving when problem occurs i used to search in internet for the some methods,
Can anybody tell me where i went wrong.
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.
Challenge: Missing letters
Link to the challenge: