对于我的项目,我必须扫描BLE标签并显示其RSSI的接近程度。
BLE的输出正在使用JavaScript模板。
<body>
<div id="header" data-role="header" data-theme="b">
<h1>BLE overview</h1>
</div>
</br>
<div data-role="content" id="home">
<a href="#" data-role="button" data-theme="b" data-inline="true" class="pure-button initialize">Initialize</a>
<a href="#" data-role="button" data-theme="b" data-inline="true" class="pure-button startScan">Start Scan</a>
<a href="#" data-role="button" data-theme="b" data-inline="true" class="pure-button stopScan">Stop Scan</a>
</div>
<ul data-role="list-view" class="devices"></ul>
<div data-role="content id="result">
<script type="text/template" id="device"> //start of the schript tag and output of the scanned BLEs
<ul data-role="listview">
<li data-address="{0}">
<h2>{1}</h2>
<a href="#" data-role="button" data-theme="b" class="pure-button connect">Connect</a>
<div id="rssiop"> RSSI: <div> // value of the RSSI
</br>
</li>
</ul>
</script>
</div>
返回rssi值的函数如下
function startScanSuccess(obj)
{
console.log("The RSSI value is:" + obj.rssi); // here I see the RSSI value on the console
if (obj.status == "scanResult")
{
console.log("Scan Result");
addDevice(obj.address, obj.name);
}
else if (obj.status == "scanStarted")
{
console.log("Scan Started");
}
else
{
console.log("Unexpected Start Scan Status");
}
}
这是一个给出扫描BLE的名称和地址的函数
function addDevice(address, name)
{
var $devices = $(".devices");
var $check = $devices.find("li[data-address='{0}']".format(address));
if ($check.length > 0)
{
return;
}
console.log("Mein RSSI: " + obj.rssi);
document.getElementById("rssiop").innerHTML = "The RSSI value is:";
var template = $("#device").text().format(address, name);
$devices.append(template);
}
所以一切正常,当我将div-tag放在模板脚本之上时,我可以看到RSSI。任何人都可以弄清楚为什么innerHTML在模板部分不起作用?
答案 0 :(得分:0)
我明白了:
问题是innerHTML不起作用,因为我使用append() - 命令进行列表输出。我只需将rssi参数添加到addDevices函数中就可以了。
addDevice函数的正确代码:
function addDevice(address, name, rssi)
{
var $devices = $(".devices");
var $check = $devices.find("li[data-address='{0}']".format(address));
if ($check.length > 0)
{
return;
}
var template = $("#device").text().format(address, name, rssi);
$devices.append(template);
}