javascript - too many decimals + styling not visible on website -

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my script below displays many decimal points in return value

also, when posted code onto website, did not display text styling added

can please tell me im missing?

thanks

<html>      <head>     <style>             body {color:rgb(128,128,128);}             p.3 {color:rgb(128,128,128);}             p.3 {font-size:20px;}     </style>      <script type = "text/javascript">      function convert() {         var amount=document.getelementbyid('amount');         var currency=document.getelementbyid('currency');         var converted=document.getelementbyid('converted');         var choice=document.getelementbyid('choice');         var aed=1;         var us=0.27;         var qr=0.99;         var sr=1.02;         var kd=0.0778;         var bd=0.102;          switch(document.converter.currency.value) {             case "us dollars" :                 document.converter.converted.value=us*document.converter.amount.value;                 document.converter.choice.value=document.converter.currency.value;             break;             case "qatar riyal":                 document.converter.converted.value=qr*document.converter.amount.value;                 document.converter.choice.value=document.converter.currency.value;             break;             case "saudi riyal":                 document.converter.converted.value=sr*document.converter.amount.value;                 document.converter.choice.value=document.converter.currency.value;             break;             case "kuwaiti dinar":                 document.converter.converted.value=kd*document.converter.amount.value;                 document.converter.choice.value=document.converter.currency.value;             break;             case "bahrain dinar":                 document.converter.converted.value=bd*document.converter.amount.value;                 document.converter.choice.value=document.converter.currency.value;             break;         }     }     </script>      </head>      <body>         <div id="divwrapper">         <form name="converter" id="converter">         <br/> enter amount in uae dirhams         <input name="amount"type="text" id="amount" size="3" />         <br /><br />          please select currency <select name="currency" id="currency">         <option>select one</option>         <option value="us dollars">us dollars</option>         <option value="qatar riyal">qatar riyal</option>         <option value="saudi riyal">saudi riyal</option>         <option value="kuwaiti dinar">kuwaiti dinar</option>         <option value="bahrain dinar">bahrain dinar</option>         </select>           <input type="button" name="convt" id="convt" onclick="convert()" value="convert" />         <br /><br />          <p class="3"> amount is:         <input name="converted" type="text" id="converted" style="border:0px" style="color:rgb(255,0,102)" style="text-align:center" style="font-size:22px"  value="" size="5"/>         in          <input name="choice" type="text" id="choice" style="border:0px" style="color:rgb(255,0,102)" style="font-size:22px" style="text-align:center" value="" size="10"> </p>          <br /><br />         </form>         </div>     </body>  </html>

regarding javascript/decimals

assuming want things rounded 2 decimal places, should employ .tofixed() function, tschulze mentioned.

here's how incorporate current structure (you'll have similar things each of case statements):

document.converter.converted.value=(bd*document.converter.amount.value).tofixed(2); document.converter.choice.value=document.converter.currency.value;

regarding styling

the issues having styling due having multiple style attributes. correct way apply multiple styles have of different aspects setting inside 1 style attribute, separated semicolons:

<input name="converted" type="text" id="converted" style="border:0; color:rgb(255,0,102); text-align:center; font-size:22px;" value="" size="5"/>

additional notes

it seems simplify code switching structure have single set multiplier , choose apply case fitting:

function convert() {     var amount=document.getelementbyid('amount');     var currency=document.getelementbyid('currency');     var converted=document.getelementbyid('converted');     var choice=document.getelementbyid('choice');     var multiplier=1;      switch(document.converter.currency.value) {         case "us dollars" : multiplier=0.27; break;         case "qatar riyal": multiplier=0.99; break;         case "saudi riyal": multiplier=1.02; break;         case "kuwaiti dinar": multiplier=0.0778; break;         case "bahrain dinar": multiplier=0.102; break;     }       document.converter.converted.value=(multiplier*document.converter.amount.value).tofixed(2);      document.converter.choice.value=document.converter.currency.value; }

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