JavaScript Regular expression-suffix option (tag)

I: Indicates case-insensitive when matching

STR = "JavaScript is different from Java";

reg =/java\w*/i;

Arr_m = Str.match (reg);//arr_m = ["JavaScript"]

G: Indicates a global match is performed

STR = "JavaScript is different from Java";

reg =/java\w*/ig;

Arr_m = Str.match (reg);//arr_m = ["JavaScript"]

M: Indicates that matching is performed in multiline mode

In multiline mode,^ represents the beginning of a line or the beginning of a string, whichrepresents the end of a line (newline) or the end of a string

str = "JavaScript is different from Java they is different";

reg =/\w+$/;

Arr_m = Str.match (reg);//arr_m = ["Different"]

str = "JavaScript is different from java\nthey be different";

reg =/\w+$/;

Arr_m = Str.match (reg);//arr_m = ["Different"]

str = "JavaScript is different from java\nthey be different";

reg =/\W+$/MG;

Arr_m = Str.match (reg);//arr_m = ["Java", "different"]

str = "JavaScript is different from Java\njavascript and Java is different.";

REG1 =/(^java\w*) | (Java)/ig;

REG2 =/(^java\w*) | (Java)/img;

ARR_M1 = Str.match (reg);//arr_m1 = ["JavaScript"]

arr_m2 = Str.match (reg);//arr_m2 = ["JavaScript", "Java", "JavaScript"]

JavaScript Regular expression-suffix option (tag)