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Cover image for RegEx match all words with a prefix
Adam K Dean
Adam K Dean

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RegEx match all words with a prefix

#javascript #regex

Here is a snippet to match all words that begin with a specified prefix.

/\bprefix\S+/g
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JavaScript implementation:

"test tbl_test1 tbl_test2 test".match(/\btbl_\S+/g)
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Or

/\btbl_\S+/g.exec("test tbl_test1 tbl_test2 test")
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Which is the same as:

var regex = /\btbl_\S+/g;
    matches = [],
    match;

while (match = regex.exec(line)) {
    matches.push(match[0]);
}
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If you want a dynamic prefix, use RegExp:

var regex = new RegExp('\\b' + prefix + '\\S+', 'g'),
    matches = [],
    match;

while (match = regex.exec(line)) {
    matches.push(match[0]);
}
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