foreach char in string

Question

I'm trying to achieve the below Java selection in Javascript, and I'm a little stumped at the moment...

Java:

String input = inputField.getText();

foreach (char c: input.toCharArray()){
    input = input.replace('a','1');
    input = input.replace('b','2');
    //and so on...
}
return input;
}

This is what I've tried:

var input = document.getElementById('inputField').value; //input field is textarea

for(var i = 0; i < input.length; i++){
    for(input.charAt(i)){
        input = input.replace('a','1');
        input = input.replace('b','2');
    }
}
return input;
}

I've also tried some different variations, such as disregarding the loop entirely and just using replace; however, then the replaces will just fire off sequentially and will not cover the length of long multi spaced strings.

Any help on this would be greatly appreciated. Thanks!

Your code (java one) doesn't make any sense to me. Same as replacing all chars to 'z' — realUser404, Nov 30 '14 at 23:07
Are you trying achieve something like a [Caesar cipher](http://en.wikipedia.org/wiki/Caesar_cipher)? — James, Nov 30 '14 at 23:20
My Java code summed up. "For every character in this string; replace x character with y character and return it" I've ran my Java code before and it works for what I need it to do. I just need to write a ha equivalent. — execv3, Nov 30 '14 at 23:24

Michael Fry · Answer 1 · 2014-12-02T00:43:37.163

0

As realUser404 said, your code doesn't do what you want to to do anyway.

Here is, what I assume you want (incrementing each char in the string by 1), in Javascript.

var inputString = "abcdefg",
    outputString = "";

for (var i = 0; i < inputString.length; i++) {
    outputString += String.fromCharCode(inputString.charCodeAt(i) + 1);
}

edited Dec 02 '14 at 00:43

answered Nov 30 '14 at 23:28

Michael Fry

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It is not an `int i`. In JavaScript, it is a `var i`. – Joy Dec 01 '14 at 00:32

score 0 · Accepted Answer · edited May 23 '17 at 12:27

0

The replace function in JavaScript just replaces the first occurrence. A similar post is How to replace all occurrences of a string in JavaScript?.

What you should use is RegExp:

s = 'abcabc';
s = s.replace(/a/g, 'b');

Check out the code here: JSFiddle.

edited May 23 '17 at 12:27

Community

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answered Dec 01 '14 at 00:29

Joy

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foreach char in string

2 Answers2