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Java JavaScript PHP C C ++.

: Java JavaScript PHP C ++ C:

          let regexp = /your regexp/g;

alert("Java JavaScript PHP C++ C".match(regexp)); // Java JavaScript PHP C++ C

| .

let regexp = /Java|JavaScript|PHP|C|C\+\+/g;

let str = "Java, JavaScript, PHP, C, C++";

alert( str.match(regexp) ); // Java,Java,PHP,C,C

. : Java JavaScript .

JavaScript Java .

C C ++.

let regexp = /Java(Script)?|C(\+\+)?|PHP/g;

let str = "Java, JavaScript, PHP, C, C++";

alert( str.match(regexp) ); // Java,JavaScript,PHP,C,C++