JAVASCRIPT Problems

Hello


Students check these javascript problems

1. Add new elemts at the beginning of array
   <html >
   <body >
   <script language="javascript" >
   var scripts=new Array();
   scripts[0]="PHP";
   scripts[1]="ASP";
   scripts[2]="JAVASCRIPT";
   scripts[3]="HTML";
   document.write(scripts.join("< br > "));
   document.write("< br >---- NOW AFTER APPLYING unshift()---< br >");
   scripts.unshift("VBSCRIPT","PERL");
   document.write(scripts.join("< br >"));
   </script >
   </body >
   </html >
   
   
2. Display Today's date and Time
   
   < html >
   < title >
   < /title >
   < body >
   < script language="javascript" >
   var d=new Date;
   document.write("< b > "+d);
   < /script >
   < /body >
   < /html >
   
3. Add an element to position 2 in an array
   < html >
   < body >
   < script type="text/javascript" >
   var fruits = ["HTML", "JSP", "PHP", "ASP"];
   document.write("Removed: " + fruits.splice(2,0,"JAVASCRIPT") + "< br / >");
   document.write(fruits);
   < /script >
   < /body >
   < /html >
   
   
4. Concatenate two arrays
   
   < html >
   < body >
   < h2 > concat arrays containig alphabets,numbers,symbols < /h2 >
   <script language="javascript" >
   var alphabets = ["a","b","c"];
   var numbers = ["1","2"];
   var symbols = ["@", "$","^"];
   var alphano = alphabets.concat(numbers,symbols);
   document.write(alphano);
   < /script >
   < /body >
   < /html >
   
   
5. To concert today's date to string
   < html >
   < body >
   < script language="javascript" >
   var d =new Date();
   document.write("in original form");
   document.write(d +"< br/ > ");
   document.write("(according to UTC) to string:");
   document.write(d.toUTCString());
   < /script >
   < /body >
   < /html >
   
   
6. TO remove first element of the array
   < html >
   < head >
   < title > Removing the first Element < /title >
   < script language="javascript" type="text/javascript" >
   < !--
   var x = new Array(1,2,3,4);
   var firstElement = x.shift();
   alert(firstElement);
   alert(2);
   alert(3);
   alert(4);
   alert(x);
   //-->
   < /script >
   < /head >
   < body >
   < h1 > Removing the first Element < /h1 >
   < /body >
   < /html >
   
   
7. Replace character in a string
   < html>
   < body>
   < script language="javascript" >
   var str="LOGIN UR ID!";
   document.write(str.replace(/ID/,"ACCOUNT"));
   < /script >
   < /body >
   < /html >
   
8. Reverse order of elements in the array
   < html >
   < title > JavaScript array reverse() example < /title >
   < body >
   < h2 >
   Example of reversing an array
   < /h2 >
   < script type="text/javascript" >
   var arr = new Array(3);
   arr[0]="1";
   arr[1]="2";
   arr[2]="3";
   document.write("< b > Array before reversed is < /b >="+arr+"< br > ");
   document.write("< b > Reversed array is < /b > ="+arr.reverse()+"<br > ");
   < /script >
   < /body >
   < /html >
   

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