我正在处理的页面:http://gacc.nifc.gov/gbcc/predictive/psa_ercmap/dev/psaercmap1.html
单击阴影区域时,与该区域相关的图表弹出。我要弄清楚的是如何在底部获得"下一个PSA"链接,以将弹出窗口中的图表推向下一个PSA,每次单击它。我已经弄清楚了如何通过一个PSA推进它,但是无法超越那个PSA。您将查看是否单击链接。
i具有一个函数(称为替换),该函数替换了图表的图像源,并用指向下一个PSA编号的链接。但是,我不知道如何增加它。我尝试了PSA 和PSA = PSA1,但它们都没有起作用。
这是我的代码:
<title>DEV PSA ERC Map DEV</title>
<link href="style.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
<script type="text/javascript">
function overlay(a) {
PSA = a.id;
var numeric = a.id.replace('GB', '');
PSAnum = Number(numeric)
PSA1 = PSAnum + 1;
nextPSA = ('0' + PSA1).slice(-2);
var overlayContent = '';
overlayContent += '<div id="overlay">';
overlayContent += '<div>';
var imgsrce = '';
imgsrce += 'Charts/WebCharts/GB';
imgsrce += numeric;
imgsrce += '/ERCGraph.PNG';
overlayContent += '<img id="chartimage" src="';
overlayContent += imgsrce;
overlayContent += '" />';
overlayContent += '<br /><b><h1> <a href="#" onclick="closePopup()">Close</a></b></h1>';
overlayContent += '<b><h1> <a href="#" onclick="replace(this)">Next PSA</a></b></h1>';
overlayContent += '</div>';
overlayContent += '</div>';
$("#overlay").replaceWith(overlayContent);
el = document.getElementById("overlay");
el.style.visibility = (el.style.visibility == "visible") ? "hidden" : "visible";
if (el.style.visibility == "visible") {
//el.style.visibility="hidden";
}
} //end of overlay function
function replace(a) {
image = document.getElementById('chartimage');
console.log(image.src);
console.log(PSA);
image.src = 'Charts/WebCharts/GB';
image.src += nextPSA;
image.src += '/ERCGraph.PNG';
PSA++;
console.log(PSA);
} //end of replace function
$('.overlay-bg').click(function() {
closePopup();
});
function closePopup() {
el = document.getElementById("overlay");
el.style.visibility = "hidden";
}
$(function() {
$.get("getDate.php", function(data) {
document.getElementById("timestamp").innerHTML = "<b>RAWS observations updated on " + data + "</b>";
});
});
var file;
file = 'GB_PSAdata_Real.js';
$.getJSON(file, function(events) {
var gbname = Object.keys(events);
var divContent = '';
divContent += '<div id="map">';
divContent += '<map name="mapmap">';
for (i = 0; i < gbname.length; i++) {
var PSA = (gbname[i]);
JSONcoords = events[PSA][0].Coords;
JSONcoordString = JSONcoords.toString();
divContent += '<area id="' + PSA + '" href="#" shape="poly" coords="';
divContent += JSONcoordString;
divContent += '" onclick="overlay(this)">';
// console.log(divContent)
}
divContent += '</map>';
divContent += '<img src="GetPSAavg.php" width="826" height="1005" usemap="#mapmap" />';
divContent += '</div>';
$("#map").replaceWith(divContent);
//$("#overlay").replaceWith(overlayContent);
;
})
</script>
</head>
<div id="overlay">
</div>
<body>
<div id="header">
<img src="PSlogo.png" style="height:75px">
<img src="GBlogo.png" style="height:75px">
<span><b>Great Basin ERC Percentiles</b> *Experimental*</span>
</div>
<div id="main">
<div id="map"></div>
<div id="timestamp">RAWS Observations Updated</div>
<div id="legend">
<img src="LegendFull2.png" id="legendIMG">
</div>
</div>
</body>
</html>
您需要将将数字递增的代码移动到replace()
函数中,因此每次调用replace()
时都会执行它。当前,它仅在调用overlay()
函数时仅执行一次。
首先,明确声明一个全局变量(在任何函数之外):
var currentPSANum = null;
将此线放入overlay()
函数中:
currentPSANum = Number(a.id.replace('GB',''));
然后将以下内容用于replace()
函数:
function replace(a) {
currentPSANum++;
var image = document.getElementById('chartimage');
image.src = 'Charts/WebCharts/GB' + ('0' + currentPSANum).slice(-2) + '/ERCGraph.PNG';
}