syntax - The cause of SyntaxError: Unexpected identifier in a JavaScript conditional statement based on the length of a string -

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i've created simple if/else statement : 

var myname = ["mark"];  if myname.length <= 3;  {      console.log("it's not true");  } else  {      console.log("variable consists of" myname.length);     console.log("i finished first course".substring(0,26));  }

unfortunately, console returns error : syntaxerror: unexpected identifier

i've tried add square brackets var myname = "mark"; didn't help.

with 

var myname = ["mark"]

you assiging array myname, not want in case:

var myname = "mark"

you have use parentheses around if-condition. semicolon wrong:

if (myname.length <= 3){      ... }

in else-block you've got first statement wrong. have use + concatenate arguments want print:

console.log("variable consists of" + myname.length);

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