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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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