以下的保留字不可以用作变量,函数名,对象名等,其中有的保留字是为以后JAVASCRIPT扩展用的.

abstract

boolean

break

byte

case

catch

char

class

const

continue

default

do

double

else

extends

false

final

finally

float

for

function

goto

if

implements

import

in

instanceof

int

interface

long

native

new

null

package

private

protected

public

return

short

static

super

switch

synchronized

this

throw

throws

transient

true

try

var

void

while

with