如何在jquery选择器中传递php变量值？

Question

I want to highlight that portion of a mapped image whose id is retrieved from mysql database. I have stored the id in $loc variable. Now using jquery selectors I want to pass this php variable in my jquery selector so that it will highlight the portion of image having the same id as in $loc. Here is my working code:

    <script type="text/javascript" src="jquery.js"></script>
 <script type="text/javascript" src="jquery.maphilight.js"></script>
<script type="text/javascript">
 $(function () {
        $(".mapping").maphilight();


    $(".hoverable").css("border", "3px solid red");


    var data = $('#cr2').data('maphilight') || {};  
    data.alwaysOn = !data.alwaysOn;
    $('#cr1').data('maphilight', data).trigger('alwaysOn.maphilight'); // portion to always highlight (I WANT TO PASS THE PHP VARIABLE $LOC INSTEAD OF '#CR1'

});<area shape="poly" id="cr1" class="room" coords="549,272,489,334,534,377,594,316" href="www.msn.com" target="_top" alt="CR1" name="room-1">

Answer 1

Replace #cr1 with #<?php echo $loc ?>

Instead of:

$('#cr1').data('maphilight', data).trigger('alwaysOn.maphilight');

Use:

$('#<?php echo $loc ?>').data('maphilight', data).trigger('alwaysOn.maphilight');

Answer 2

You can use json_encode function and pass the php variable $loc as a parameter

For example

var data = <?php echo json_encode($loc); ?>;

jQuery.each(data, function(i,event) {
   // alert(event.toSource());
   var id = event.id;  // here id is the array of the value based on the php variable for $loc
   badge_name = event.name; // here name is the array of the value based on the php variable for $loc
});