javascript 覆盖 Firefox 和 chrome 中的快捷键
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Overriding shortcut keys in firefox and chrome
提问by wolfcall
I have a script that is supposed to open a section of a web page and save changes on Ctrl + n and Ctrl + s repectivly I got it working in IE but it doesn't seem to work in firefox and chrome. Any ideas?
我有一个脚本，它应该打开网页的一部分并分别保存 Ctrl + n 和 Ctrl + s 上的更改我让它在 IE 中工作，但它似乎在 firefox 和 chrome 中不起作用。有任何想法吗？
My over ride function.
我的超车功能。
function prevent(e)
{
try{e.stopPropagation();}catch(ex){}
try{e.preventDefault()}catch(ex){}
try{if (e.preventDefault)
e.preventDefault();
else {
e.cancelBubble = true;
e.returnValue = false;
e.keyCode = 0;
}} catch(ex){}
}
回答by Hunter Mitchell
I have seen the same issue. Some browsers will not allow you to capture certain shortcuts. Look at this https://stackoverflow.com/a/7296303/1366887
我见过同样的问题。某些浏览器不允许您捕获某些快捷方式。看看这个https://stackoverflow.com/a/7296303/1366887
Some key combinations are resticted in Chrome 4, but not in Chrome 3. Look here: https://groups.google.com/a/chromium.org/forum/?fromgroups=#!topic/chromium-bugs/Ntc1byZXHfU
某些组合键在 Chrome 4 中受到限制，但在 Chrome 3 中不受限制。请看这里：https://groups.google.com/a/chromium.org/forum/?fromgroups=#!topic/chromium-bugs/Ntc1byZXHfU
Here is the Javascript:
这是Javascript：
$(window).keydown(function(event) {
if(event.ctrlKey && event.keyCode == 84) {
console.log("Hey! Ctrl+T event captured!");
event.preventDefault();
}
if(event.ctrlKey && event.keyCode == 83) {
console.log("Hey! Ctrl+S event captured!");
event.preventDefault();
}
});
I have used this numerous times, and it has worked greatly.
我已经多次使用它，并且效果很好。
Here is another rescource you can take a look at: http://unixpapa.com/js/key.html
这是您可以查看的另一个资源：http: //unixpapa.com/js/key.html
Without Jquery:
没有jQuery：
onkeydown = function(e){
if(e.ctrlKey && e.keyCode == 'S'.charCodeAt(0)){
e.preventDefault();
//your saving code
}
}
Here is a JSFIDDLEof it working.
这是它工作的JSFIDDLE。
