What would be the use of the following code? function validate(field) { var valid=''ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz''; var ok=''yes''; var temp; for(var i=0;i<field.value.length;i++) { temp='''' + field.value.substring(i,i+1) if(valid.indexOf(temp)==''-1'') { ok=''no''; } } if(ok==''no'') { alert(''error''); field.focus(); } }

Which will toggle a div element's background color? Toggle

In JavaScript, the encodeURI() function is used to encode special characters. Which special characters is/are an exception to that rule? A. £ B. € C. @ D. $

Which one shows an alert for an empty string? var a = '''';

Which will correctly get the length of an object?

What's the output? document.getElementById('banana').className = document.getElementById('banana').className.replace( /(?:^|\s)apple(?!\S)/g ,'e' );

Consider the code: function a() {} function b() {} Which statement makes 'a' object inherit from 'b' object?

Result of c? function a(name) {this.name = name;} var b = new a(); var c = typeof(b.name);

Which ways can you use to attach click event handler to id1 div tag on all browsers?

Create the XMLHttpRequest is the same in all Internet Explorer browser versions.

Which method can you use to convert JSON data in responseText to JavaScript object?