एचटीएमएल क्षेत्र टैग पर होवरिंग कैसे लागू करें?

Question

मैं HTML के क्षेत्र टैग को होवर करने की कोशिश कर रहा हूं। मैंने इसे सीएसएस में आजमाया:

area:hover 
{ 
    border:1px solid black; 
} 

यह वह HTML है जिस पर इसे लागू किया जाना चाहिए।

<!-- This imagemap inserted by Gwyn's Imagemap Selector http://gwynethllewelyn.net/gwyns-imagemap-selector/ --> 
<img src='http://dailyaeen.com.pk/epaper/wp-content/uploads/2012/09/27+Sep+2012-1.jpg?1349003469874' usemap='#imgmap_css_container_imgmap201293016112' class='imgmap_css_container' title='imgmap201293016112' alt='imgmap201293016112' id='img-imgmap201293016112' /> 
<map id='imgmap201293016112' name='imgmap_css_container_imgmap201293016112'> 
    <area shape="poly" coords="2,0,604,-3,611,-3,611,166,346,165,345,130,-2,130,-2,124,1,128,1,126" href="" alt="imgmap201293016112-0" title="imgmap201293016112-0" class="imgmap201293016112-area" id="imgmap201293016112-area-0" /> 
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    <area shape="rect" coords="1,617,457,760" href="" alt="imgmap201293016112-12" title="imgmap201293016112-12" class="imgmap201293016112-area" id="imgmap201293016112-area-12" /> 
    <area shape="rect" coords="345,760,577,847" href="" alt="imgmap201293016112-13" title="imgmap201293016112-13" class="imgmap201293016112-area" id="imgmap201293016112-area-13" /> 
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    <area shape="rect" coords="346,850,571,935" href="" alt="imgmap201293016112-15" title="imgmap201293016112-15" class="imgmap201293016112-area" id="imgmap201293016112-area-15" /> 
    <area shape="rect" coords="578,761,915,865" href="" alt="imgmap201293016112-16" title="imgmap201293016112-16" class="imgmap201293016112-area" id="imgmap201293016112-area-16" /> 
    <area shape="rect" coords="0,1017,226,1085" href="" alt="imgmap201293016112-17" title="imgmap201293016112-17" class="imgmap201293016112-area" id="imgmap201293016112-area-17" /> 
    <area shape="rect" coords="0,908,342,1017" href="" alt="imgmap201293016112-18" title="imgmap201293016112-18" class="imgmap201293016112-area" id="imgmap201293016112-area-18" /> 
    <area shape="rect" coords="229,1010,342,1084" href="" alt="imgmap201293016112-19" title="imgmap201293016112-19" class="imgmap201293016112-area" id="imgmap201293016112-area-19" /> 
    <area shape="rect" coords="0,1086,340,1206" href="" alt="imgmap201293016112-20" title="imgmap201293016112-20" class="imgmap201293016112-area" id="imgmap201293016112-area-20" /> 
    <area shape="rect" coords="0,1209,224,1290" href="" alt="imgmap201293016112-21" title="imgmap201293016112-21" class="imgmap201293016112-area" id="imgmap201293016112-area-21" /> 
    <area shape="rect" coords="0,1290,225,1432" href="" alt="imgmap201293016112-22" title="imgmap201293016112-22" class="imgmap201293016112-area" id="imgmap201293016112-area-22" /> 
    <area shape="rect" coords="0,1432,340,1517" href="" alt="imgmap201293016112-23" title="imgmap201293016112-23" class="imgmap201293016112-area" id="imgmap201293016112-area-23" /> 
    <area shape="rect" coords="346,1432,686,1517" href="" alt="imgmap201293016112-24" title="imgmap201293016112-24" class="imgmap201293016112-area" id="imgmap201293016112-area-24" /> 
    <area shape="rect" coords="461,1266,686,1429" href="" alt="imgmap201293016112-25" title="imgmap201293016112-25" class="imgmap201293016112-area" id="imgmap201293016112-area-25" /> 
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    <area shape="rect" coords="341,1085,573,1151" href="" alt="imgmap201293016112-38" title="imgmap201293016112-38" class="imgmap201293016112-area" id="imgmap201293016112-area-38" /> 
    <area shape="poly" coords="917,868,917,925,688,927,688,955,576,955,574,867,572,864" href="" alt="imgmap201293016112-39" title="imgmap201293016112-39" class="imgmap201293016112-area" id="imgmap201293016112-area-39" /> 
    <area shape="poly" coords="919,1173,917,1231,688,1231,688,1266,574,1267,576,1175,576,1175" href="" alt="imgmap201293016112-40" title="imgmap201293016112-40" class="imgmap201293016112-area" id="imgmap201293016112-area-40" /> 
    <area shape="poly" coords="572,1222,572,1265,459,1265,458,1289,339,1290,344,1225" href="" alt="imgmap201293016112-41" title="imgmap201293016112-41" class="imgmap201293016112-area" id="imgmap201293016112-area-41" /> 
</map> 

तो यह कैसे संभव है कि जब मैं क्षेत्र को घुमाता हूं, तो इसका सीमा रंग काला या लाल हो जाता है?

Answer 1

क्या मैंने किया था एक कैनवास तत्व का निर्माण करना था कि मैं तो स्थिति छवि मानचित्र के सामने। फिर, जब भी कोई क्षेत्र घुमाया जाता है, तो मैं एक func को कॉल करता हूं जो उस आकार और आकार-प्रकार के लिए समन्वय स्ट्रिंग प्राप्त करता है। यदि यह एक पॉली है तो मैं कैनवास पर एक रूपरेखा तैयार करने के लिए तारों का उपयोग करता हूं। यदि यह एक आयत है तो मैं एक रेक्ट रूपरेखा तैयार करता हूं। सर्कल से निपटने के लिए आप आसानी से कोड जोड़ सकते हैं।

आप पॉली/रेक्ट/सर्कल भरने से पहले कैनवास की अस्पष्टता 100% से भी कम सेट कर सकते हैं। आप कैनवास के संदर्भ के लिए वैश्विक पर निर्भरता भी बदल सकते हैं - इसका मतलब यह होगा कि आप एक ही पृष्ठ पर 1 से अधिक छवि-मानचित्र से निपट सकते हैं।

<!DOCTYPE html> 
<html> 
<head> 
<script> 

// stores the device context of the canvas we use to draw the outlines 
// initialized in myInit, used in myHover and myLeave 
var hdc; 

// shorthand func 
function byId(e){return document.getElementById(e);} 

// takes a string that contains coords eg - "227,307,261,309, 339,354, 328,371, 240,331" 
// draws a line from each co-ord pair to the next - assumes starting point needs to be repeated as ending point. 
function drawPoly(coOrdStr) 
{ 
    var mCoords = coOrdStr.split(','); 
    var i, n; 
    n = mCoords.length; 

    hdc.beginPath(); 
    hdc.moveTo(mCoords[0], mCoords[1]); 
    for (i=2; i<n; i+=2) 
    { 
     hdc.lineTo(mCoords[i], mCoords[i+1]); 
    } 
    hdc.lineTo(mCoords[0], mCoords[1]); 
    hdc.stroke(); 
} 

function drawRect(coOrdStr) 
{ 
    var mCoords = coOrdStr.split(','); 
    var top, left, bot, right; 
    left = mCoords[0]; 
    top = mCoords[1]; 
    right = mCoords[2]; 
    bot = mCoords[3]; 
    hdc.strokeRect(left,top,right-left,bot-top); 
} 

function myHover(element) 
{ 
    var hoveredElement = element; 
    var coordStr = element.getAttribute('coords'); 
    var areaType = element.getAttribute('shape'); 

    switch (areaType) 
    { 
     case 'polygon': 
     case 'poly': 
      drawPoly(coordStr); 
      break; 

     case 'rect': 
      drawRect(coordStr); 
    } 
} 

function myLeave() 
{ 
    var canvas = byId('myCanvas'); 
    hdc.clearRect(0, 0, canvas.width, canvas.height); 
} 

function myInit() 
{ 
    // get the target image 
    var img = byId('img-imgmap201293016112'); 

    var x,y, w,h; 

    // get it's position and width+height 
    x = img.offsetLeft; 
    y = img.offsetTop; 
    w = img.clientWidth; 
    h = img.clientHeight; 

    // move the canvas, so it's contained by the same parent as the image 
    var imgParent = img.parentNode; 
    var can = byId('myCanvas'); 
    imgParent.appendChild(can); 

    // place the canvas in front of the image 
    can.style.zIndex = 1; 

    // position it over the image 
    can.style.left = x+'px'; 
    can.style.top = y+'px'; 

    // make same size as the image 
    can.setAttribute('width', w+'px'); 
    can.setAttribute('height', h+'px'); 

    // get it's context 
    hdc = can.getContext('2d'); 

    // set the 'default' values for the colour/width of fill/stroke operations 
    hdc.fillStyle = 'red'; 
    hdc.strokeStyle = 'red'; 
    hdc.lineWidth = 2; 
} 
</script> 

<style> 
body 
{ 
    background-color: gray; 
} 
canvas 
{ 
    pointer-events: none;  /* make the canvas transparent to the mouse - needed since canvas is position infront of image */ 
    position: absolute; 
} 
</style> 

<title></title> 
</head> 
<body onload='myInit()'> 
    <canvas id='myCanvas'></canvas>  <!-- gets re-positioned in myInit(); --> 
<center> 
<img src='http://dailyaeen.com.pk/epaper/wp-content/uploads/2012/09/27+Sep+2012-1.jpg?1349003469874' usemap='#imgmap_css_container_imgmap201293016112' class='imgmap_css_container' title='imgmap201293016112' alt='imgmap201293016112' id='img-imgmap201293016112' /> 
<map id='imgmap201293016112' name='imgmap_css_container_imgmap201293016112'> 
    <area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="2,0,604,-3,611,-3,611,166,346,165,345,130,-2,130,-2,124,1,128,1,126" href="" alt="imgmap201293016112-0" title="imgmap201293016112-0" class="imgmap201293016112-area" id="imgmap201293016112-area-0" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="1,131,341,213" href="" alt="imgmap201293016112-1" title="imgmap201293016112-1" class="imgmap201293016112-area" id="imgmap201293016112-area-1" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="346,166,614,241" href="" alt="imgmap201293016112-2" title="imgmap201293016112-2" class="imgmap201293016112-area" id="imgmap201293016112-area-2" /> 
    <area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="917,242,344,239,345,496,574,495,575,435,917,433" href="" alt="imgmap201293016112-3" title="imgmap201293016112-3" class="imgmap201293016112-area" id="imgmap201293016112-area-3" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="1,416,341,494" href="" alt="imgmap201293016112-4" title="imgmap201293016112-4" class="imgmap201293016112-area" id="imgmap201293016112-area-4" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="1,215,341,410" href="" alt="imgmap201293016112-5" title="imgmap201293016112-5" class="imgmap201293016112-area" id="imgmap201293016112-area-5" /> 
    <area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="916,533,916,436,578,436,576,495,806,496,807,535" href="" alt="imgmap201293016112-6" title="imgmap201293016112-6" class="imgmap201293016112-area" id="imgmap201293016112-area-6" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="805,536,918,614" href="" alt="imgmap201293016112-7" title="imgmap201293016112-7" class="imgmap201293016112-area" id="imgmap201293016112-area-7" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="461,494,803,616" href="" alt="imgmap201293016112-8" title="imgmap201293016112-8" class="imgmap201293016112-area" id="imgmap201293016112-area-8" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,497,223,616" href="" alt="imgmap201293016112-9" title="imgmap201293016112-9" class="imgmap201293016112-area" id="imgmap201293016112-area-9" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="230,494,456,614" href="" alt="imgmap201293016112-10" title="imgmap201293016112-10" class="imgmap201293016112-area" id="imgmap201293016112-area-10" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="345,935,572,1082" href="" alt="imgmap201293016112-11" title="imgmap201293016112-11" class="imgmap201293016112-area" id="imgmap201293016112-area-11" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="1,617,457,760" href="" alt="imgmap201293016112-12" title="imgmap201293016112-12" class="imgmap201293016112-area" id="imgmap201293016112-area-12" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="345,760,577,847" href="" alt="imgmap201293016112-13" title="imgmap201293016112-13" class="imgmap201293016112-area" id="imgmap201293016112-area-13" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,759,344,906" href="" alt="imgmap201293016112-14" title="imgmap201293016112-14" class="imgmap201293016112-area" id="imgmap201293016112-area-14" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="346,850,571,935" href="" alt="imgmap201293016112-15" title="imgmap201293016112-15" class="imgmap201293016112-area" id="imgmap201293016112-area-15" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="578,761,915,865" href="" alt="imgmap201293016112-16" title="imgmap201293016112-16" class="imgmap201293016112-area" id="imgmap201293016112-area-16" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1017,226,1085" href="" alt="imgmap201293016112-17" title="imgmap201293016112-17" class="imgmap201293016112-area" id="imgmap201293016112-area-17" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,908,342,1017" href="" alt="imgmap201293016112-18" title="imgmap201293016112-18" class="imgmap201293016112-area" id="imgmap201293016112-area-18" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="229,1010,342,1084" href="" alt="imgmap201293016112-19" title="imgmap201293016112-19" class="imgmap201293016112-area" id="imgmap201293016112-area-19" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1086,340,1206" href="" alt="imgmap201293016112-20" title="imgmap201293016112-20" class="imgmap201293016112-area" id="imgmap201293016112-area-20" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1209,224,1290" href="" alt="imgmap201293016112-21" title="imgmap201293016112-21" class="imgmap201293016112-area" id="imgmap201293016112-area-21" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1290,225,1432" href="" alt="imgmap201293016112-22" title="imgmap201293016112-22" class="imgmap201293016112-area" id="imgmap201293016112-area-22" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1432,340,1517" href="" alt="imgmap201293016112-23" title="imgmap201293016112-23" class="imgmap201293016112-area" id="imgmap201293016112-area-23" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="346,1432,686,1517" href="" alt="imgmap201293016112-24" title="imgmap201293016112-24" class="imgmap201293016112-area" id="imgmap201293016112-area-24" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="461,1266,686,1429" href="" alt="imgmap201293016112-25" title="imgmap201293016112-25" class="imgmap201293016112-area" id="imgmap201293016112-area-25" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="230,1365,455,1430" href="" alt="imgmap201293016112-26" title="imgmap201293016112-26" class="imgmap201293016112-area" id="imgmap201293016112-area-26" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="231,1291,457,1360" href="" alt="imgmap201293016112-27" title="imgmap201293016112-27" class="imgmap201293016112-area" id="imgmap201293016112-area-27" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="230,1210,342,1289" href="" alt="imgmap201293016112-28" title="imgmap201293016112-28" class="imgmap201293016112-area" id="imgmap201293016112-area-28" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="692,928,916,1016" href="" alt="imgmap201293016112-29" title="imgmap201293016112-29" class="imgmap201293016112-area" id="imgmap201293016112-area-29" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="460,616,916,759" href="" alt="imgmap201293016112-30" title="imgmap201293016112-30" class="imgmap201293016112-area" id="imgmap201293016112-area-30" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="693,1316,917,1518" href="" alt="imgmap201293016112-31" title="imgmap201293016112-31" class="imgmap201293016112-area" id="imgmap201293016112-area-31" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="344,1150,572,1219" href="" alt="imgmap201293016112-32" title="imgmap201293016112-32" class="imgmap201293016112-area" id="imgmap201293016112-area-32" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="693,1015,916,1171" href="" alt="imgmap201293016112-33" title="imgmap201293016112-33" class="imgmap201293016112-area" id="imgmap201293016112-area-33" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="577,955,686,1032" href="" alt="imgmap201293016112-34" title="imgmap201293016112-34" class="imgmap201293016112-area" id="imgmap201293016112-area-34" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="577,1036,687,1101" href="" alt="imgmap201293016112-35" title="imgmap201293016112-35" class="imgmap201293016112-area" id="imgmap201293016112-area-35" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="576,1104,689,1172" href="" alt="imgmap201293016112-36" title="imgmap201293016112-36" class="imgmap201293016112-area" id="imgmap201293016112-area-36" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="691,1232,918,1313" href="" alt="imgmap201293016112-37" title="imgmap201293016112-37" class="imgmap201293016112-area" id="imgmap201293016112-area-37" /> 
    <area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="341,1085,573,1151" href="" alt="imgmap201293016112-38" title="imgmap201293016112-38" class="imgmap201293016112-area" id="imgmap201293016112-area-38" /> 
    <area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="917,868,917,925,688,927,688,955,576,955,574,867,572,864" href="" alt="imgmap201293016112-39" title="imgmap201293016112-39" class="imgmap201293016112-area" id="imgmap201293016112-area-39" /> 
    <area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="919,1173,917,1231,688,1231,688,1266,574,1267,576,1175,576,1175" href="" alt="imgmap201293016112-40" title="imgmap201293016112-40" class="imgmap201293016112-area" id="imgmap201293016112-area-40" /> 
    <area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="572,1222,572,1265,459,1265,458,1289,339,1290,344,1225" href="" alt="imgmap201293016112-41" title="imgmap201293016112-41" class="imgmap201293016112-area" id="imgmap201293016112-area-41" /> 
</map> 
</center> 

</body> 
</html> 

Answer 2

आप इस

उदाहरण प्राप्त करने के लिए jQuery उपयोग कर सकते हैं:

$(function() { 
     $('.map').maphilight(); 
    }); 

अधिक जानने के लिए यह LINK का अध्ययन करें।

यदि उपरोक्त कोई काम नहीं करता है तो इस link पर जाएं।

संपादित:

तरह class="mapping"

प्रत्येक area टैग करने के लिए एक ही कक्षा दो और कोड नीचे इस कोशिश

$('.mapping').mouseover(function() { 
    alert($(this).attr('id')); 
}).mouseout(function(){ 
    alert('Mouseout....');  
}); 

Answer 3

पूरा इस स्क्रिप्ट के लिए

, ड्रॉ सर्कल के लिए समारोह,

function drawCircle(coordon) 
    { 
     var coord = coordon.split(','); 

     var c = document.getElementById("myCanvas"); 
     var hdc = c.getContext("2d"); 
     hdc.beginPath(); 

     hdc.arc(coord[0], coord[1], coord[2], 0, 2 * Math.PI); 
     hdc.stroke(); 
    }