javascript replace() is not replacing all the characters match

Question

I want to turn /Admin/ListOfMovies into _Admin_ListOfMovies using replace() .

var $id = id.replace('/', '_');

It looks like it only replacing the first /. How do I replace all of them?

Thanks for helping.

Answer 1

使用带有g标志的正则表达式 。

var $id = id.replace(/\//g, '_');

Answer 2

I hate javascript replace since it always wants a regex. Try this

var $id=id.split("/").join("_");

Answer 3

If you don't want to use the global flag which will do the replace function twice on your string, you can do this method which is a bit more specific and only replaces it once; it's also useful to know for other situations.

var $id = id.replace(/\/(\w+)\/(\w+)/, '_$1_$2');

Answer 4

function strReplace( str ) {
if( typeof str === 'string' ) {
    return text.replace( /[\/]/g, function( match, pos, originalText ) {
        if( match === '/' ){
            return '_';
        }
    });
}
return '';
}

console.log( strReplace( /Admin/ListOfMovies ) );