Basic Javascript #1_variable

right click on a webpage and select Inspect. We can use 'Console' tab for Javascript.

• Let's make a list

let a_list = ['수박','참외','배']

• a_list[1] shows '참외'

• To add another variable, a_list.push('감')

• a_list shows [수박', '참외', '배', '감']

Dictionary form

• let a_dict = {'name':'bob','age':27}

• a_dict['name'] shows 'bob'

• add another variable a_dict['height'] = 180

a_dict shows {name: 'bob', age: 27, height: 180}

Separation

• let myemail = 'sparta@gmail.com'

• myemail.split('@') means separate myemail based on '@'

['sparta', 'gmail.com']

It's also a list.

• myemail.split('@')[1] shows gmail.com

• if you split this one more by '.'

myemail.split('@')[1].split('.')

['gmail', 'com']

• myemail.split('@')[1].split('.')[0] shows gmail