Question

I have following string

"content \" content <tag attr1=\"val1\" attr2=\"val2\">content \" content</tag> content \" content"

I want to replace all " characters inside tags definitions to ' character with use String.replace() function. " characters inside tag content must remain in its present form.

"content \" content <tag attr1='val1' attr2='val2'>content \" content</tag> content \" content"

Maybe is regex with some grouping can used?

Answer 1

You can use replace() and a regex-callback to do this for you:

var str = 'content " content <tag attr1="val1" attr2="val2">content " content</tag> content " content';

function replaceCallback(match) {
    return match.replace(/"/g, "'");
}

str = str.replace(/<([^>]*)>/g, replaceCallback);

The regex will match anything in-between < and > characters in your string and pass the matches to the replaceCallback() method which will then, as desired, replace " with ' characters.

Edit: The replaceCallback() was using .replace('"', "'"), but this would only replace the first ". I’ve updated it to use a regex-replace instead and it now works as-desired.