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JAVASCRIPT WEEK 4

QuestionAnswer
var numbers=new Array("5","12","8"); The numbers[1] is equal to : 12
var numbers=new Array("5","12","8"); document.write(numbers[3]); The code will display the third value of the array
var numbers=[25,19,34,17,30]; grades.sort(function(x, y){return x-y}); Array ascending sort
var numbers=[25,19,34,17,30]; grades.sort(function(x, y){return y-x}); Array descending sort
var colours = ["red", "blue", "yellow"]; document.write(colours.toString()); The result is: red, blue, yellow
var colours = ["red", "blue", "yellow"]; document.write(colours.join(" * ")); The result is: red*blue*yellow
var colours=["red", "blue", "yellow"]; colours.reverse(); The result is : yellow blue red
var colours=["red", "blue", "yellow"]; colours.pop(); The result is: red blue
var colours=["red", "blue", "yellow"]; colours.push("green"); The result is: red,blue,yellow,green
var colours=["red", "blue", "yellow"]; colours.shift(); The result of the code above is: blue,yellow
var colours=["red", "blue", "yellow"]; colours.unshift("green"); The result of the code above is: green,red,blue,yellow
var numbers = [10, 20, 40]; students.splice(2,0,30); The result of the code above is: 10,20,30,40
var str=new String("Unicaf University"); document.write(str); The result of the code above is: Unicaf University
var str=" Unicaf university "; var final_str=str.trim(); document.write(final_str); The result of the code above is: Unicaf university
var str ="UNICAF University"; document.write(str.toLowerCase()); The result of the code above is: unicaf university
var str ="unicaf university"; document.write(str.toUpperCase ()); The result of the code above is: UNICAF UNIVERSITY
var str1="Unicaf"; var str2="University"; var str_3=str_1.concat(str_2); document.write(str_3); The result of the code above is: Unicaf University
var str="unicaf university"; document.write(str.slice(7,10)); The result of the code above is: uni
var str="unicaf university"; document.write(str.chartAt (7)); The result of the code above is: u
var str="unicaf university"; document.write(str. indexOf("university")); The result of the code above is: 7
var colours=["red", "blue", "yellow"]; delete colours[0]; document.write(colours[0]); The result of the code above is: undefined
var colours1=["red", "blue"]; var colours2=["yellow", "green"]; var colours3=colours1.concat(colours2); The result of the code above is: red,blue,yellow,green
Created by: kcoulee