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@@ -0,0 +1,102 @@
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+//3 persons
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+let a = {
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+ 'Name': 'Sergei',
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+ 'surname': 'Levshnia',
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+ 'fathername': 'Sergeevich'
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+}
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+console.log(a['Name'], a.surname)
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+
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+let b = {
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+ 'Name': 'Thomas',
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+ surname: 'Anderson'
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+}
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+console.log(b.Name, b.surname)
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+
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+let c = {
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+ Name: 'Sylvester',
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+ surname: 'Stallone'
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+}
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+console.log(c['Name'], c['surname'])
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+
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+//different fields
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+a.age = 20
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+b.nickname = 'Neo'
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+c.movies = ['Rocky', 'Rambo: First Blood', 'Cobra', 'Over the Top']
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+console.log(a, b, c)
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+
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+//fields Check
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+function fieldCheck(obj, string) {
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+ if(string in obj) {
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+ alert(obj[string])
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+ }
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+}
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+console.log(fieldCheck(a, 'age'))
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+console.log(fieldCheck(b, 'awoken'))
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+console.log(fieldCheck(c, 'movies'))
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+
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+//array of persons
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+let persons = []
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+persons.push(a, b, c)
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+persons[persons.length] = {
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+ Name: 'Billy',
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+ surname: 'Joebob'
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+}
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+
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+//loop of persons
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+console.log('------------------------')
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+console.log('loop of persons:')
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+for(i in persons) {
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+ console.log(persons[i])
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+}
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+
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+//loop of name and surname
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+console.log('------------------------')
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+console.log('loop of name and surname:')
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+for(i in persons) {
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+ console.log(persons[i].Name, persons[i].surname)
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+}
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+
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+//loop of loop of values
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+console.log('------------------------')
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+console.log('loop of loop of values:')
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+for(let i in persons) {
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+ for(let j in persons[i]) {
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+ console.log(persons[i][j])
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+ }
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+ console.log('!-----------------------')
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+}
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+
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+//fullName
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+for(let i in persons) {
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+ persons[i].fullName = `${persons[i].surname} ${persons[i].Name}` + (persons[i].fathername? ` ${persons[i].fathername}` : '')
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+}
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+
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+//serialize
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+let serialize = JSON.stringify(persons)
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+console.log(serialize)
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+
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+//deserialize
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+persons.push(JSON.parse(serialize)[0])
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+console.log(persons)
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+
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+//HTML
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+let str = "<table border='1'>"
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+for (let i = 0; i < persons.length; i++) {
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+ str += `<tr><td>${persons[i].Name}</td><td>${persons[i].surname}</td></tr>`
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+}
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+str += "</table>"
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+
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+console.log(str)
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+document.write(str)
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+
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+//Html optional fields
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+let htmlOptional = '<h2>HTML optional fields</h2><table border="1">'
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+for(let i = 0; i < persons.length; i++) {
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+ htmlOptional += '<tr>'
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+ for(let j in persons[i]) {
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+ htmlOptional += `<td>${persons[i][j]}</td>`
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+ }
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+ htmlOptional += '</tr>'
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+}
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+htmlOptional += '</table>'
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+document.write(htmlOptional)
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