function selectWords(string) {
const REGEX = /([^\s]+)+/g;
return string
// remove punctuation
.replace(/[^a-z0-9\s+#]/ig, "")
// perform the match
.match(REGEX)
// prevent null returns
|| []
;
}
var text = "Hello World"
var [first, second, ...rest] = selectWords(text);
console.log(1, {first, second, rest});
// example with punctuation
var text = "I can come today, she said, but not tomorrow."
var [first, second, third, ...rest] = selectWords(text);
console.log(2, {first, second, third, rest});
// example with possible throw
var text = ",.'\"` \r"
var [first, second, third, ...rest] = selectWords(text);
console.log(3, {first, second, third, rest});
// example with a specific word to be matched
function selectSpecificWord(string, ...words) {
return selectWords(string)
.filter(word => ~words.indexOf(word))
;
}
var expected = "C++";
var test = "I know C++";
var test1 = "I know C++AndJava";
console.log("Test Case 1", selectSpecificWord(test, expected));
console.log("Test Case 2", selectSpecificWord(test1, expected));
所以你想匹配单词和字符串“C++”?或者更一般的东西? – qxz
'new RegExp('\\ b'+'I know C \\ + \\ +'+'(?!\\ w)','gi')' – Visman
更普遍的东西。如果text =“C++”,我希望它匹配“我知道C++”。但不是“我也知道C++”。 – changus