node.js string.replace doesn't work?

Question

var variableABC = \"A B C\"; 
variableABC.replace(\'B\', \'D\') //wanted output: \'A D C\'

but \'variableABC\' didn\'t change :

Answer 1

If you just want to clobber all of the instances of a substring out of a string without using regex you can using:

    var replacestring = "A B B C D"
    const oldstring = "B";
    const newstring = "E";
    while (replacestring.indexOf(oldstring) > -1) {
        replacestring = replacestring.replace(oldstring, newstring);
    }        
    //result: "A E E C D"