What is the correct way to do a regular replacement in JavaScript for all matches found?

Question:

The way I currently do:

var i = 0;
while ((i = str.indexOf("_", i)) != -1) {
    str = str.replace("_", " ");
}

Or until:

str = str.split("_").join(" ");

They do not seem to me to be the most suitable .

Use a regular expression in the first argument of replace with the g (global) flag:

str = str.replace(/_/g, ' ');

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