How can I show a small image and a paragraph by mouse hovering on another mapped image area?

问题

This will explain better what I want than my words: http://jquery-image-map.ssdtutorials.com/ Even though the tutorial is available but it is done using image overlays in photoshop. But I am highlighting my mapped image using a jquery plugin "jquery.maphilight.js". Using that I have a mapped Image and it highlights over the mapped portion if I mouse hover on image. How can I display a small picture and paragraph if a person hovers his mouse on a specific room (mapped portion).

Here is the javascript:

 $(function () {
        $(".mapping").maphilight();
        $("#mapping").css('visibility','hidden')

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

& This is the html of image mapping:

<div class="mapping"> 
<map name="gmap">
<area shape="poly" id="cr1" coords="550,277,485,342,533,385,597,322" href="#" alt="cr1" name="room-1">
<area shape="poly" id="cr2"coords="579,246,627,200,672,246,624,290" href="#" alt="cr2" name="room-2">

回答1:

Use the jQuery mouseover event.

You would attach it to the 'area' tags on document ready.

$(document).ready(function(){
    //this selector is selecting an element by the id of cr1.
    $('#cr1').on('mouseover', function(){
        //do your showing here
    });

    $('#cr1').on('mouseleave', function(){
        //do your hiding here
    });
});

for a generic handler you could do:

$(document).ready(function(){
    //this is an attribute selector.
    //'area' is the typ of tag to match
    //[name indicates the attribute is named 'name'
    //^= indicates the attribute 'name' should start with the value following this operator
    //'room'] think of this as indicating the value of the name attribute
    // should match: 'room*'
    $('area[name^="room"]').on('mouseover', function(){
        //do your showing here, be sure to show only 
        //for the appropriate area. Maybe select on the id.
    });

    $('area[name^="room"]').on('mouseleave', function(){
        //do your hiding here. This could be generic unless you have
        //a multi-paragrah area instead of a single display area.
    });
});

回答2:

Here is what I did to make it work: I created a div with "mouseover" and "mouseleave" attribute. and inside it I received the id of another element that I want to appear when I hover my mouse on this div.

<div  
    onmouseover="document.getElementById('div1').style.display = 'block';"  <!-- element inside brackets will be shown-->
    onmouseout="document.getElementById('div1').style.display = 'none';"> 
<area shape="poly" id="cr1" class="jTip" coords="550,277,485,342,533,385,597,322"
href="car_park_1.html" alt="cr1" name="room-1">
</div>

I posted my own answer so that it might also help others doing the same task :)

来源：https://stackoverflow.com/questions/13976601/how-can-i-show-a-small-image-and-a-paragraph-by-mouse-hovering-on-another-mapped

标签

jquery

html

css

hover

imagemap