Interview Questions on JQuery
11. How to get value of input box?
$('#id’).val();
Ex :- var bla = $('#tinput_id1’).val();
12. How to declare and initialize variables?
Var varname = value
Ex:- var var1=5;
13. How to concat two strings in jQuery?
Use +
Ex 1:- var string = “string1”+”string2”;
Ex :- var str1=”string1”;
Var str2 =”string2”;
Var string3= str1+str2;
14. How to write comments in jQuery?
Method 1 : //commentd goes here
Method 2 :- /* comments goes here */
15. How to convert string to number?
Use parseInt(stringvalue);
Ex:- var var1= parseInt(‘3’);
16. How to convert number to string?
Use toString() method.
17. How to create an array in jQuery?
Just like in javasctipt.
Var arrayname=[value1,value2,calue3];
Ex :- var array1=[3,6,8];
18. What is function?
Def :- Set of statements to perform a particular operation.
Syntax :-
function function_name(arg1,arg2){
//body
}
Ex :-
function myFunction(p1, p2) {
return p1 * p2;
// The function returns the product of p1 and p2
}
19. Can we access local variable out side the function?
No. they are permitted to that function only.
20. How to create global variables?
Create variables outside function.