JavaScript Zdobądź pierwszy znak ciągu
var str="Hello Folks!"
var firstStringChar = str.charAt(0); //H
Grepper
var str="Hello Folks!"
var firstStringChar = str.charAt(0); //HString words = "Hi There"; //creating a string var named 'words'
char index = words.charAt(0); /* setting a variable 'index' to letter
'0' of variable 'words'. In this case, index = 'H'.*/
System.out.println(index); //print var 'index' which will print "H"String str = "Grepper";
char ch = str.charAt(0);
//ch is assigned the value of Glet str = new String("This is string");
console.log("str.charAt(0) is:" + str.charAt(0));
console.log("str.charAt(1) is:" + str.charAt(1));
console.log("str.charAt(2) is:" + str.charAt(2));
console.log("str.charAt(3) is:" + str.charAt(3));
console.log("str.charAt(4) is:" + str.charAt(4));
console.log("str.charAt(5) is:" + str.charAt(5));
output:
str.charAt(0) is:T
str.charAt(1) is:h
str.charAt(2) is:i
str.charAt(3) is:s
str.charAt(4) is:
str.charAt(5) is:i"hello".charAt(0); // "h"charAt(index)