javascript js Flashcards
if you made an id is name is hello and you did like this
hello.innerHTML = “Hello”;
will you get Hello in the page?
True
console.log(2 ** 4);
16
console.log(11 %5)
1 باقي القسمه
console.log(Number(“100”));
100 بتحول اي حاجه لرقم
console.log(100..toString());
بيحول اي حاجه لstring
100
console.log(100.5555.toFixed(2));
بيقرب مرتبتين
100.56
console.log(parseFloat(“100.500”));
بيجول ال string ل float
100.5
console.log(parseInt(“100.500”));
بيحول ال string ل int
100
console.log(Math.round(99.2));
بيقرب
99
console.log(Math.floor(99.9));
بينزل الرقم
console.log(Math.ceil(99.1));
بيقرب لاقصى حاجه
100
console.log(Math.min(10,25,-11));
بيدور على الاقدم
-11
console.log(Math.max(25,10,-11));
بيدور على الاكبر
25
console.log(Math.pow(2,4));
اثنين اس اربعه
16
console.log(Math.trunc(99.5));
بيشيل الكسور
let Name = Ahmed;
console.log(Name[1])
h
let Name = Ahmed;
console.log(Name.charAt(1))
h
let Name = Ahmed;
console.log(Name.length());
5
let Name = Ahmed;
console.log(Name.toUpperCase());
AHMAD
let Name = Ahmed;
console.log(Name.toLowerCase());
ahmad
let Name = Ahmed;
console.log(Name.trim());
بيشيل ال space
let a = “Elzero web school”;
console.log(a.indexof(“web”));
بيدور على اول حاجه w
7
let a = “Elzero web school”;
console.log(a.lastIndexof(“web”))
7
let a = “Elzero web school”;
console.log(a.slice(2,6))
بيحسب من 2 و بيقطع من قبل الاخير
zero
-let a = “Elzero web school”;
console.log(a.split(“”))
let a = “Elzero web school”;
console.log(a.split(“ “,2))
هيجبلك كل الحروف-
-عنصرين بس و هيقطع كل ال spze
Elzero ,web
let a = “Elzero web school”;
console.log(a.subString(2,6))
نفس ال slice
zero
let a = “Elzero web school”;
console.log(a.subString(-10,6))
بيبدا من الصفر لو سالب
Elzero
let a = “Elzero web school”;
console.log(a.subStr(0,6))
0 البدايه
6 عدد العناصر
Elzero
let a = “Elzero web school”;
console.log(a.slice(2,6))
let a = “Elzero web school”;
console.log(a.includes(“web”))
true
let a = “Elzero web school”;
console.log(a.includes(“web”,8))
في 8 هل في web كامله
false
Boolean(“”)
false
let myfriends = [“mohammed” ,”bruh”,”bigger”,[“whatdog”,”nah”]]
console.log(${myfriends[3][1][2]});
بيدور على ال array و بعد كدهبيدور على اللي جواه و بعد كده بيدور على اللى جواه
a
let myfriends = [“mohammed” ,”bruh”,”bigger”,”whatdog”,”nah”]
myfriends[myfriends.length] = “niggates”;
console.log(${myfriends});
it adds alot anther one to it
“mohammed” ,”bruh”,”bigger”,”whatdog”,”nah”,niggates
let myfriends = [“mohammed” ,”bruh”,”bigger”,”whatdog”,”nah”]
myfriends[myfriends.length -1] = “niggates”;
console.log(${myfriends});
it will take the last one
mohammed” ,”bruh”,”bigger”,”whatdog”,niggates
/*
Arrays Methods [Adding And Removing]
- unshift(“”, “”) Add Element To The First
- push(“”, “”) Add Element To The End
- shift() Remove First Element From Array
- pop() Remove Last Element From Array
*/
let myFriends = [“Ahmed”, “Mohamed”, “Sayed”, “Alaa”];
console.log(myFriends);
myFriends.unshift(“Osama”, “Nabil”);
console.log(myFriends);
myFriends.push(“Samah”, “Eman”);
console.log(myFriends);
let first = myFriends.shift();
console.log(myFriends);
console.log(First Name Is ${first});
let last = myFriends.pop();
console.log(myFriends);
console.log(Last Name Is ${last});
/*
Arrays Methods [Adding And Removing]
- unshift(“”, “”) Add Element To The First
- push(“”, “”) Add Element To The End
- shift() Remove First Element From Array
- pop() Remove Last Element From Array
*/
console.log(myfriends.sort());
بيرتب من الاضغر للاكبر
console.log(myfriends.reverse());
بيعكس
break
بيقطع
continue
بيشيل و بيكمل
