how do i use the function i made

Question

I have made a function which is used to delete a certain word from a variable i also made.

var eliminateWord = function (usedwords){word2.replace (/go/g," ");

but i cant seem to use the function in this code:

var word1 = "go",

word2 = "go to the shops everyday and buy chocolate.";

var eliminateWord = function (usedwords){
word2.replace (/go/g," ");
};

if (word2.match("go")) {
    console.log("user entered go");
    eliminateWord ();
}
if (word2.match("to")) {
    console.log("user entered to");
}

if (word2.match("the")) {
    console.log("user entered the");
}
if (word2.match("and")) {

    console.log("user entered and");
}
console.log(word2);

Strings are immutable. `String.replace()` returns a new string; it does not change `this` in-place. — Matt Ball, Jun 14 '13 at 13:00
repost; original here: http://programmers.stackexchange.com/questions/201526/how-do-i-use-the-function-i-made — John Dvorak, Jun 14 '13 at 13:02
possible duplicate of [Javascript multiple replace](http://stackoverflow.com/questions/832257/javascript-multiple-replace) — Qantas 94 Heavy, Apr 17 '14 at 13:35

score 1 · Accepted Answer · answered Jun 14 '13 at 13:00

1

The replace method returns the modified string. It doesn't modify the string in place (and couldn't anyway, since strings are immutable). Since you aren't doing anything with the return value in the function, the changed string is discarded.

You are also messing about with globals, which is a good way to write confusing code. Pass arguments instead.

Also, there doesn't seem to be any reason to use a function expression instead of a function declaration here.

function eliminateWord(word){
    return word.replace(/go/g," ");
}

word2 = eliminateWord(word2);

answered Jun 14 '13 at 13:00

Quentin

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how do you call the function so i can use it – fgdeygdy djfhsfh Jun 14 '13 at 13:02
You have to rewrite the function before it will do anything useful. There's an example in this answer. – Quentin Jun 14 '13 at 13:03
Then? There is no "then". After you've done what I've said, you're done. – Quentin Jun 14 '13 at 13:05
but still comes up with error – fgdeygdy djfhsfh Jun 14 '13 at 13:06
If there is an error, it isn't related to this code, which [can be seen to work just fine](http://jsbin.com/ilolez/1/edit). – Quentin Jun 14 '13 at 13:08
ok yeah your'e right sorry – fgdeygdy djfhsfh Jun 14 '13 at 13:12

score 1 · Answer 2 · answered Jun 14 '13 at 13:03

1

Just return the value obtained with replace:

var eliminateWord = function (usedwords){return word2.replace (/go/g," ");

answered Jun 14 '13 at 13:03

ilovebigmacs

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how do i use the function i made

2 Answers2