Which of the following built-in functions is used to access form elements using their IDs?

Consider the following code snippet:

Which is not a JavaScript string method?

When toggling a variable, its cycle must be 0 and 1. When the variable's active value is 0, the next value should be 1, and when the variable's active value is 1, the next value should be 0. Considering the scenario above, which of the following is correct?

What's the output? var obj = { 'first':'first', '2':'2', '34':'34', '1':'1', 'second':'second' }; for (var i in obj) { alert(i); };

Correct way to create an XML object in E4X? A. var languages = new XML('JavaScriptPython'); B. var languages XML = new XML('JavaScriptPython'); C. var languages = JavaScript Python ;

What's the output? Object oriented Javascript() 'use strict' class Art{ succ() { var i=3,j,k=0; for(j=i;j<=7;j++) { k=j+i; if(k>=7) { k=k+3; } else { k=k-2; } } document.write(k-2 +'
'); } } var waj = new Art(); waj.succ();

What's the output? 'use strict' class Abc{ constructor(t, p) { this.t = t; this.p = p; } test() { var x; var c = 0; for(x=7; x!==0; x&=(x-1)) c++; console.log(c++ + this.t + this. p); } } var Obj1 = new Abc(10.5,20.5); Obj1.test();

Which modifiers must be set if we use the Javascript lastIndex Object Property during pattern matching?

What's the output? var n=1; var a=33; var b; b = a<<4; b = a>>3; b = b + 2; while(b>=1){ n = n + b; b = b - 1; } function ab(n) { if (n < 2) { return n; } else { return ab(n - 1) + ab(n - 2); } } console.log(n + ab(9));