我想使用javascript和innerHTML
更改div的内容。
我无法让它发挥作用。我刚刚添加了更改div的代码,之前代码工作正常。我仔细检查了语法。
我正在使用webshims,openlayers和jquery / javascript
在控制台中,我看到了
Uncaught TypeError: Cannot set property 'innerHTML' of null
imagegaledit - myFile.php :768
so.onmessage - myFile.php :324
768就是那条线
document.getElementById("imgedtitle").innerHTML=mnmi[0];
和324就是这个
imagegaledit(0);
帮助不大? 感谢
修改 websockets工作和反应很好
这是代码(简明扼要)
<!doctype html>
<header>
<meta charset="utf-8">
<meta http-equiv="content-type" content="text/html">
<script src="jquery-1.8.2.min.js"></script>
<script src="js-webshim/minified/extras/modernizr-custom.js"></script>
<script src="js-webshim/minified/polyfiller.js"></script>
<script>
$.webshims.polyfill();
</script>
<script src="http://maps.google.com/maps/api/js?sensor=false"></script>
<!--open layers api library-->
<script type='text/javascript' src='OpenLayers.js'></script>
<script type='text/javascript'>
//openlayers vars and stuff here...
function init(){
//when a point on map clicked...
function selected_feature(event){
//some openlayers magic...
var so = new WebSocket("ws://localhost:8000");
so.onerror=function (evt)
{response.textContent = evt;}
so.onopen = function(){
response.textContent = "opened";
so.send(JSON.stringify({command:'map',fmid:jas}));
}
so.onmessage = function (evt) {
var received_msg = evt.data;
var packet = JSON.parse(received_msg);
//pass data to var and arrays...
imagegaledit(0);
}
}//closes function selected_feature
}//closes init
function imagegaledit (w){
if (w==0){
document.getElementById("imgedtitle").innerHTML=mnmi[0];
}
}//closes imagegaledit
</script>
<body onload='init();'>
Title</br><div id="imgedtitle"> </div> </br>
</body>
答案 0 :(得分:0)
您需要一个结束脚本标记:
</script>
<body>