问题描述
在我的html文件中,我调用了一个带有两个参数的javascript函数,其中第二个参数是应该保存的文件的名称。
< a id =record_buttononclick =Recorder.record('audio','test.wav'); HREF = JavaScript的:无效(0); title =Record>< img src =images / record.pngwidth =24height =24alt =Record/>< / a>
我想制作一个动态变量,它从文本字段获取值并将其作为第二个参数(而不是test.wav),因此用户可以确定文件的名称。
< label for =文件名>文件名< /标签>
< input name =filenametype =text>
谢谢。
如果你给用户输入一个 id
属性,这样会更容易:
< input name =filenameid =filenametype =text>
现在您可以通过以下方式访问Javascript中的值:
$ b $ $
document.getElementById('filename')。请注意,如果您不控制 Recorder.record()
方法,则需要首先验证用户输入(至少要验证他们已经进入了一些)。我建议把它移到一个单独的函数中,例如:
函数recordToFilename(){
var input = document .getElementById('filename'),
fileName = input.value;
if(fileName){
Recorder.record('audio',fileName);
} else {
alert('请输入文件名!');
input.focus();
然后使用该函数:
< a id =record_buttononclick =recordToFilename(); HREF = JavaScript的:无效(0); title =Record>< img src =images / record.pngwidth =24height =24alt =Record/>< / a>
工作示例:
Inside my html file I call a javascript function that takes two parameters, where the second parameter is the name of a file that should be saved.
<a id="record_button" onclick="Recorder.record('audio', 'test.wav');" href="javascript:void(0);" title="Record"><img src="images/record.png" width="24" height="24" alt="Record"/></a>
I would like to make a dynamic variable that takes the value from a textfield and forward that as the second parameter (instead of test.wav), so the user can determine the name of the file.
<label for="filename">Filename</label>
<input name="filename" type="text">
Thanks.
解决方案 This is easier if you give your user input an id
attribute:
<input name="filename" id="filename" type="text">
Now you can access the value in Javascript with:
document.getElementById('filename').value
Note that, if you aren't controlling the Recorder.record()
method, you'll need to validate the user input first (at a minimum, to verify that they've entered something). I'd recommend moving this to a separate function, e.g.:
function recordToFilename() {
var input = document.getElementById('filename'),
fileName = input.value;
if (fileName) {
Recorder.record('audio', fileName);
} else {
alert('Please enter a filename!');
input.focus();
}
}
Then just use that function:
<a id="record_button" onclick="recordToFilename();" href="javascript:void(0);" title="Record"><img src="images/record.png" width="24" height="24" alt="Record"/></a>
Working example: http://jsfiddle.net/nrabinowitz/GFpRy/
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