对于JavaScript分配,我将使用window.open()创建一个新窗口。此窗口将使用document.write()填充内容。该窗口必须具有使用JavaScript来改变窗口中文本大小的按钮。
我的问题是,如何在这个新窗口中使用或编写JavaScript,以便我可以调整窗口的文本大小?
这是我的代码的缩短版本(存储在外部js文件中):
var newWindow;
function displayWindow() {
newWindow = window.open("", "newWindow", "width=800, height=600");
newWindow.document.write('<button onclick="resizeText(1)">-</button> Text size <button onclick="resizeText(2)">+</button>');
newWindow.document.write('Here is some text that I would like to be able to be resized.');
}
function resizeText(change) {
switch (change) {
case 1:
newWindow.document.style.fontsize = "80%";
break;
case 2:
newWindow.document.style.fontsize = "120%";
break;
default:
alert('Error');
break;
}
}
&#13;
如何在document.write()中访问我的JavaScript函数?我也尝试在document.write()语句中编写函数,但这也不起作用。
谢谢Mark。
答案 0 :(得分:1)
此代码基于您已经拥有的内容:
import collections
import string
def translator(frm='', to='', delete='', keep=None):
# Python Cookbook Recipe 1.9
# Chris Perkins, Raymond Hettinger
if len(to) == 1: to = to * len(frm)
trans = string.maketrans(frm, to)
if keep is not None:
allchars = string.maketrans('', '')
# delete is expanded to delete everything except
# what is mentioned in set(keep)-set(delete)
delete = allchars.translate(allchars, keep.translate(allchars, delete))
def translate(s):
return s.translate(trans, delete)
return translate
alpha = 'abcdefghijklmnopqrstuvwxyz'
keep_alpha=translator(keep=alpha)
while True:
speech = raw_input("Enter file name:")
wholeFile = open(speech, 'r+').read()
lowlet = wholeFile.lower()
letters = keep_alpha(lowlet)
n = len(letters)
occurrences = collections.defaultdict(int)
for x in letters:
occurrences[x]+=1
for x in occurrences:
print x, occurrences[x]
答案 1 :(得分:0)
马克 -
如果未阻止弹出窗口,则下面的示例有效。这只是您可以做到这一点的众多方法之一。请注意,它使用“opener”在父窗口中调用该函数,然后更改正文的字体大小。您的代码正在尝试设置文档的字体大小,这不是您想要的,即它不会执行任何操作。另请注意,fontSize区分大小写,如果使用“fontsize”,则不会发生任何事情。最后,在设置正文字体大小时不要使用百分比,因为它不会像您期望的那样工作。而是使用px(像素)。无论如何,这应该足以让你去,我会把细节留给你。
<html>
<body onload="init()">
<h2>Parent Window</h2>
<script type="text/javascript">
var popup;
function init() {
popup = window.open("", "newWindow", "width=800, height=600");
if (popup) popup.document.write('<html><body>Child Window<br><button onclick="opener.fontSize(48)">Test</button></body></html>');
}
function fontSize(size) {
popup.document.body.style.fontSize = size + 'px';
}
</script>
</body>
</html>