写“Hello World”的正确javascript语法是()?
A、document.write("Hello World")
B、"Hello World"
C、response.write("Hello World")
D、("Hello World")
A、document.write("Hello World")
B、"Hello World"
C、response.write("Hello World")
D、("Hello World")
A、A.alertBox="Hello World" B、B.msgBox("Hello World") C、C.alert("Hello World") D、D.alertBox("Hello World")
A、SELECT SUBSTR( ‘Hello World’,1) FROM dual; B、SELECT INITCAP(TRIM (‘Hello World’, 1,1)) FROM dual; C、SELECT LOWER(SUBSTR(‘Hello World’, 1, 1) FROM dual; D、SELECT LOWER(SUBSTR(‘Hello World’, 2, 1) FROM dual; E、SELECT LOWER(TRIM (‘H’ FROM ‘Hello World’)) FROM dual;
A、Hello B、Hello World C、Compilation fails. D、Hello World 5 E、The code runs with no output. F、An exception is thrown at runtime.
A、Hello B、Hello World C、Compilation fails. D、Hello World 5 E、The code runs with no output.
A、Hello B、Hello World C、Compilation fails. D、Hello World 5 E、The code runs with no output. F、An exception is thrown at runtime.