Get div value by id - Javascript_问答_开发者_运维开发者技术经验分享

I'm trying to get the value of my div into Javascript. It's a Drupal website and I want to convert currencies and displaying them in a javascript popup.

So far I have this:

<?php 
        print "<script type='text/javascript'>";
        $rate=currency_api_convert("HKD", "CNY");
        print "exchangerate = ".$rate["value"].";";

        print "var $displaycur = getElementById('record-price');";
        print "$displaycur;";

        print "</script>";
?>

And all I get in my browers is:

<script type="text/javascript">
        exchangerate = 0.8406;var  = getElementById('record-price');;
</script>

Although I know the reason why it's displayed like this, I still don't know how to get the ID of the div in a proper variable. Any ideas? Should I use innerHTML?

UPDATE: A part of the source files: page.tpl.php

<?php
// $Id: page.tpl.php,v 1.18.2.1 2009/04/30 00:13:31 goba Exp $
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php print $language->language ?>" lang="<?php print $language->language ?>" dir="<?php print $language->dir ?>">
  <head>
    <?php print $head ?>
    <title><?php print $head_title ?></title>
    <?php print $styles ?>
    <?php print $scripts ?>
    <?php 
        // lets get the exchange rate from HKD to RMB, with the help of yahoo finance api and the currency api module
        // we pass the value to javascript, the tooltip will handle the rest
        print "<script type='text/javascript'>";
        $rate=currency_api_convert("HKD", "CNY");
        print "exchangerate = ".$rate["value"].";";
        print "</script>";
    ?>
    <script type="text/javascript">
        function showCurrency() {
            alert('$rate');
        }
    </script>
    <!--[if lte IE 7]>
      <?php print phptemplate_get_ie_styles(); ?>
    <![endif]-->

        <!--[if IE 6]>
            <style type="text/css">
                .fg-menu-ipod .fg-menu li { width: 95%; }
                .fg-menu-ipod .ui-widget-content { border:0; }
                .views-field-field-performer-value { margin-left:-150px;}
                .views-field-field-instruments-value { margin-left:-150px;}
                .coda-nav{display:block; position:absolute; width:400px;height:20px;top:260px;right:100px;z-index:125421;}  </style>
        <![endif]-->


  </head>
  <body<?php print phptemplate_body_class($left, $right); ?>>

And the node-record.tpl.php:

print '<div id="part1-right-line3">';   
    print开发者_高级运维 '<div id="record-price">';                                                        
    print uc_currency_format($node->sell_price);
    print '</div>';                     
    print '</div>'; 
    print '<div id="part1-right-line4">';   
    print '<div id="add-to-cart">';     
    print drupal_get_form('uc_product_add_to_cart_form_'. $node->nid, $node);
    print '</div>'; 
    print '</div>';
    print '</div>';

And here is the output:

Get div value by id - Javascript

Please tell me if you need more, cause there is :) Thanks in advance

<?php 
   print "<script type='text/javascript'>\n";
   $rate=currency_api_convert("HKD", "CNY");
   print "exchangerate = ".$rate["value"].";\n";
   print "var displaycur = document.getElementById('record-price');\n";
   print "alert(displaycur.innerHTML);\n";
   print "</script>\n";
?>

I guess 'record-price' is ID of your DIV... so displaycur.innerHTML will have everything between <div> and </div>.

EDIT:

function showCurrency() {
  alert(document.getElementById('record-price').innerHTML);
  }

Have you defined $displaycur in your PHP code? Also, it should be document.getElementById.

Update: All you need from PHP is the exchange rate. You can do everything else in JavaScript:

<script type="text/javascript">
var exchangerate = <?php echo currency_api_convert("HKD", "CNY"); ?>;
var div = document.getElementById('record-price');
var price = parseInt(div.innerHTML);

// convert and display
alert(price * exchangerate);
</script>