Javascript 在 document.write() 输出中使用换行符
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Use line break in document.write() output
提问by Muhammad Ali Khamis
How can I use break line in my output? There is something wrong in document.write.
如何在输出中使用换行符？中出现问题document.write。
Please review my code and give me best solution..
请检查我的代码并给我最好的解决方案..
<html>
<head>
<script type="text/javascript">
function FahToCent (degFah)
{
var degCent = new Array ();
for (var loopCounter = 0; loopCounter <=2; loopCounter++)
{
degCent[loopCounter] = 5/9 * (degFah[loopCounter] - 32);
}
return degCent;
}
</script>
</head>
<body>
<script type="text/javascript">
var degFah = new Array ();
for (var loopCounter = 0; loopCounter <= 2; loopCounter++)
{
degFah[loopCounter] = prompt ("Enter Temperature in Fahrenheit");
}
document.write (FahToCent (degFah)+"<br>");
</script>
</body>
</html>
回答by NPKR
use this
用这个
function FahToCent (degFah)
{
return 5/9 * (degFah - 32);;
}
var degFah = new Array ();
for (var loopCounter = 0; loopCounter <= 2; loopCounter++)
{
degFah[loopCounter] = prompt ("Enter Temperature in Fahrenheit");
document.write(FahToCent (degFah[loopCounter])+"<br>");
}
Example Link : http://jsfiddle.net/pradkumar_n/Bucjz/
回答by Senthil
just add break tag in your function FahtoCent
只需在您的函数 FahtoCent 中添加中断标记
degCent[loopCounter] = 5/9 * (degFah[loopCounter] - 32)+"<BR>";
回答by Teemu
You've defined degCentas an Array, which is passed to document.write()as an argument. This argument is supposed to be a string, and now it's an array. Hence it's automatically converted to a string before outputting, using Array.toString()method. This method returns a comma-separated list of array values (as a string).
您已定义degCent为一个数组，它document.write()作为参数传递给。这个参数应该是一个字符串，现在它是一个数组。因此它在输出之前使用Array.toString()方法自动转换为字符串。此方法返回以逗号分隔的数组值列表（作为字符串）。
However, you can convert the returned array to a string, and add linebreaks with the same manouver, using an Array-method called join(). Like this:
但是，您可以将返回的数组转换为字符串，并使用名为 的数组方法使用相同的操作添加换行符join()。像这样：
document.write(FahToCent(degFah).join('<br/>'));
However, document.write()is considered as a bad practise for DOM manipulations. Please check some advanced methods to show the output in the document:
但是，document.write()对于 DOM 操作来说，这被认为是一种不好的做法。请检查一些高级方法以在文档中显示输出：
回答by gallie
I'm not altogether certain of what you are asking here but I think you just want to go to a new line after the code runs. In which case you need writeline rather than write and remove "br" tag
我不完全确定您在这里问什么，但我认为您只想在代码运行后转到新行。在这种情况下，您需要 writeline 而不是编写和删除“br”标签
document.writeline (FahToCent (degFah));
