编辑2:错误在此行:<input type="button" value="totalbandwidthresult" onclick="javascript:totalbandwidth();">
尝试按钮执行计算。下面是必需的变量,以及HTML所在的
我收到错误点击:Uncaught TypeError: object is not a function index.html:71
onclick
这是我的Javascript
function totalbandwidth() {
var fps=Number(document.calculator.fps.value);
var bitrate=Number(document.calculator.bitrate.value);
var numberofcameras = Number(document.calculator.numberofcameras.value);
var encoding = document.calculator.encoding.value;
if (encoding = "mjpeg")
{
storage = bitrate*fps;
}
else
{
storage = bitrate;
}
totalbandwidth = (numberofcameras * storage) / 1000;
document.calculator.totalbandwidthresult.value = totalbandwidth;
}
HTML:
<form name="calculator" class="formtable">
<div class="formrow"><label for="rcname">RC Name</label> <input type="text" name="rcname"></div>
<div class="formrow"><label for="fps">FPS</label> <input type="text" name="fps"> </div>
<div class="formrow"><label for="bitrate">Bitrate</label> <input type="text" name="bitrate"> </div>
<div class="formrow"><label for="numberofcameras">Number of Cameras</label> <input type="text" name="numberofcameras"> </div>
<div class="formrow"><label for="encoding">Encoding</label> <select name="encoding" id="encodingoptions">
<option value="h264">H.264</option>
<option value="mjpeg">MJPEG</option>
<option value="mpeg4">MPEG4</option>
</select></div>
Total Storage: <input type="text" name="totalstorage">
Total Bandwidth: <input type="text" name="totalbandwidth">
<input type="button" value="totalbandwidthresult" onclick="javascript:totalbandwidth();">
基本上 - 似乎我在JS中使用的语法可能有问题 - 但我不确定。
答案 0 :(得分:43)
请仅更改功能名称;无需其他更改
<script>
function totalbandwidthresult() {
alert("fdf");
var fps = Number(document.calculator.fps.value);
var bitrate = Number(document.calculator.bitrate.value);
var numberofcameras = Number(document.calculator.numberofcameras.value);
var encoding = document.calculator.encoding.value;
if (encoding = "mjpeg") {
storage = bitrate * fps;
} else {
storage = bitrate;
}
totalbandwidth = (numberofcameras * storage) / 1000;
alert(totalbandwidth);
document.calculator.totalbandwidthresult.value = totalbandwidth;
}
</script>
<form name="calculator" class="formtable">
<div class="formrow">
<label for="rcname">RC Name</label>
<input type="text" name="rcname">
</div>
<div class="formrow">
<label for="fps">FPS</label>
<input type="text" name="fps">
</div>
<div class="formrow">
<label for="bitrate">Bitrate</label>
<input type="text" name="bitrate">
</div>
<div class="formrow">
<label for="numberofcameras">Number of Cameras</label>
<input type="text" name="numberofcameras">
</div>
<div class="formrow">
<label for="encoding">Encoding</label>
<select name="encoding" id="encodingoptions">
<option value="h264">H.264</option>
<option value="mjpeg">MJPEG</option>
<option value="mpeg4">MPEG4</option>
</select>
</div>Total Storage:
<input type="text" name="totalstorage">Total Bandwidth:
<input type="text" name="totalbandwidth">
<input type="button" value="totalbandwidthresult" onclick="totalbandwidthresult();">
</form>
答案 1 :(得分:3)
我能够通过这个帖子中的答案来解决这个问题:https://stackoverflow.com/a/8968495/1543447
基本上,我将所有值,函数名称和元素名称重命名为不同的值,这样它们就不会发生冲突 - 它起作用了!
答案 2 :(得分:3)
由于该行为有点奇怪,所以我对该行为进行了一些测试,这是我的结果:
如果您是:
form
和onclick="xxx()"
id="xxx"
或name="xxx"
添加到该元素
这是一些测试及其结果:
function totalbandwidth(){ alert("Total Bandwidth > 9000Mbps"); }
<form onsubmit="return false;">
<button onclick="totalbandwidth()">SUCCESS</button>
</form>
function totalbandwidth(){ alert("Total Bandwidth > 9000Mbps"); }
<form onsubmit="return false;">
<button id="totalbandwidth" onclick="totalbandwidth()">FAILED</button>
</form>
function totalbandwidth(){ alert("Total Bandwidth > 9000Mbps"); }
<form onsubmit="return false;">
<button name="totalbandwidth" onclick="totalbandwidth()">FAILED</button>
</form>
function totalbandwidth(){ alert("Total Bandwidth > 9000Mbps"); }
<form onsubmit="return false;">
<input type="button" value="totalbandwidth" onclick="totalbandwidth()" />SUCCESS
</form>
function totalbandwidth(){ alert("Total Bandwidth > 9000Mbps"); }
<button id="totalbandwidth" onclick="totalbandwidth()">SUCCESS</button>
function totalbandwidth(){ alert("The answer is no, the span will not affect button"); }
<form onsubmit="return false;">
<span name="totalbandwidth" >Will this span affect button? </span>
<button onclick="totalbandwidth()">SUCCESS</button>
</form>
答案 3 :(得分:0)
如果您的函数中有大写字母,则会发生这种问题,因此请将其更改为小写字母单词。它将起作用,否则使函数的名称变短