这不是一个好主意,使用悬停点击,因为Facebook已经在按键会当您键入的意见被记录的注释部分 - 但如果你正在使用一些罕见的按键可能没问题。
此外,在Facebook上类似按钮的标签由跨度实现的,而不是一个标签本身,所以你需要的代码是:
$(window).keypress(function(e){
if (e.keyCode == 108) {
$('._4-u2:hover .UFILikeLink span').click();
}
});
现在,如果你确实需要点击在未来的标签这里有您需要的代码:
首先,生成假的浏览器点击:
:
;(function($, undefined) {
var rkeyEvent = /^key/,
rmouseEvent = /^(?:mouse|contextmenu)|click/;
$.fn.simulate = function(type, options) {
return this.each(function() {
new $.simulate(this, type, options);
});
};
$.simulate = function(elem, type, options) {
var method = $.camelCase("simulate-" + type);
this.target = elem;
this.options = options;
if (this[ method ]) {
this[ method ]();
} else {
this.simulateEvent(elem, type, options);
}
};
$.extend($.simulate, {
keyCode: {
BACKSPACE: 8,
COMMA: 188,
DELETE: 46,
DOWN: 40,
END: 35,
ENTER: 13,
ESCAPE: 27,
HOME: 36,
LEFT: 37,
NUMPAD_ADD: 107,
NUMPAD_DECIMAL: 110,
NUMPAD_DIVIDE: 111,
NUMPAD_ENTER: 108,
NUMPAD_MULTIPLY: 106,
NUMPAD_SUBTRACT: 109,
PAGE_DOWN: 34,
PAGE_UP: 33,
PERIOD: 190,
RIGHT: 39,
SPACE: 32,
TAB: 9,
UP: 38
},
buttonCode: {
LEFT: 0,
MIDDLE: 1,
RIGHT: 2
}
});
$.extend($.simulate.prototype, {
simulateEvent: function(elem, type, options) {
var event = this.createEvent(type, options);
this.dispatchEvent(elem, type, event, options);
},
createEvent: function(type, options) {
if (rkeyEvent.test(type)) {
return this.keyEvent(type, options);
}
if (rmouseEvent.test(type)) {
return this.mouseEvent(type, options);
}
},
mouseEvent: function(type, options) {
var event, eventDoc, doc, body;
options = $.extend({
bubbles: true,
cancelable: (type !== "mousemove"),
view: window,
detail: 0,
screenX: 0,
screenY: 0,
clientX: 1,
clientY: 1,
ctrlKey: false,
altKey: false,
shiftKey: false,
metaKey: false,
button: 0,
relatedTarget: undefined
}, options);
if (document.createEvent) {
event = document.createEvent("MouseEvents");
event.initMouseEvent(type, options.bubbles, options.cancelable,
options.view, options.detail,
options.screenX, options.screenY, options.clientX, options.clientY,
options.ctrlKey, options.altKey, options.shiftKey, options.metaKey,
options.button, options.relatedTarget || document.body.parentNode);
// IE 9+ creates events with pageX and pageY set to 0.
// Trying to modify the properties throws an error,
// so we define getters to return the correct values.
if (event.pageX === 0 && event.pageY === 0 && Object.defineProperty) {
eventDoc = event.relatedTarget.ownerDocument || document;
doc = eventDoc.documentElement;
body = eventDoc.body;
Object.defineProperty(event, "pageX", {
get: function() {
return options.clientX +
(doc && doc.scrollLeft || body && body.scrollLeft || 0) -
(doc && doc.clientLeft || body && body.clientLeft || 0);
}
});
Object.defineProperty(event, "pageY", {
get: function() {
return options.clientY +
(doc && doc.scrollTop || body && body.scrollTop || 0) -
(doc && doc.clientTop || body && body.clientTop || 0);
}
});
}
} else if (document.createEventObject) {
event = document.createEventObject();
$.extend(event, options);
// standards event.button uses constants defined here: http://msdn.microsoft.com/en-us/library/ie/ff974877(v=vs.85).aspx
// old IE event.button uses constants defined here: http://msdn.microsoft.com/en-us/library/ie/ms533544(v=vs.85).aspx
// so we actually need to map the standard back to oldIE
event.button = {
0: 1,
1: 4,
2: 2
}[ event.button ] || (event.button === -1 ? 0 : event.button);
}
return event;
},
keyEvent: function(type, options) {
var event;
options = $.extend({
bubbles: true,
cancelable: true,
view: window,
ctrlKey: false,
altKey: false,
shiftKey: false,
metaKey: false,
keyCode: 0,
charCode: undefined
}, options);
if (document.createEvent) {
try {
event = document.createEvent("KeyEvents");
event.initKeyEvent(type, options.bubbles, options.cancelable, options.view,
options.ctrlKey, options.altKey, options.shiftKey, options.metaKey,
options.keyCode, options.charCode);
// initKeyEvent throws an exception in WebKit
// see: http://stackoverflow.com/questions/6406784/initkeyevent-keypress-only-works-in-firefox-need-a-cross-browser-solution
// and also https://bugs.webkit.org/show_bug.cgi?id=13368
// fall back to a generic event until we decide to implement initKeyboardEvent
} catch(err) {
event = document.createEvent("Events");
event.initEvent(type, options.bubbles, options.cancelable);
$.extend(event, {
view: options.view,
ctrlKey: options.ctrlKey,
altKey: options.altKey,
shiftKey: options.shiftKey,
metaKey: options.metaKey,
keyCode: options.keyCode,
charCode: options.charCode
});
}
} else if (document.createEventObject) {
event = document.createEventObject();
$.extend(event, options);
}
if (!!/msie [\w.]+/.exec(navigator.userAgent.toLowerCase()) || (({}).toString.call(window.opera) === "[object Opera]")) {
event.keyCode = (options.charCode > 0) ? options.charCode : options.keyCode;
event.charCode = undefined;
}
return event;
},
dispatchEvent: function(elem, type, event) {
if (elem[ type ]) {
elem[ type ]();
} else if (elem.dispatchEvent) {
elem.dispatchEvent(event);
} else if (elem.fireEvent) {
elem.fireEvent("on" + type, event);
}
},
simulateFocus: function() {
var focusinEvent,
triggered = false,
element = $(this.target);
function trigger() {
triggered = true;
}
element.bind("focus", trigger);
element[ 0 ].focus();
if (!triggered) {
focusinEvent = $.Event("focusin");
focusinEvent.preventDefault();
element.trigger(focusinEvent);
element.triggerHandler("focus");
}
element.unbind("focus", trigger);
},
simulateBlur: function() {
var focusoutEvent,
triggered = false,
element = $(this.target);
function trigger() {
triggered = true;
}
element.bind("blur", trigger);
element[ 0 ].blur();
// blur events are async in IE
setTimeout(function() {
// IE won't let the blur occur if the window is inactive
if (element[ 0 ].ownerDocument.activeElement === element[ 0 ]) {
element[ 0 ].ownerDocument.body.focus();
}
// Firefox won't trigger events if the window is inactive
// IE doesn't trigger events if we had to manually focus the body
if (!triggered) {
focusoutEvent = $.Event("focusout");
focusoutEvent.preventDefault();
element.trigger(focusoutEvent);
element.triggerHandler("blur");
}
element.unbind("blur", trigger);
}, 1);
}
});
/** complex events **/
function findCenter(elem) {
var offset,
document = $(elem.ownerDocument);
elem = $(elem);
offset = elem.offset();
return {
x: offset.left + elem.outerWidth()/2 - document.scrollLeft(),
y: offset.top + elem.outerHeight()/2 - document.scrollTop()
};
}
function findCorner(elem) {
var offset,
document = $(elem.ownerDocument);
elem = $(elem);
offset = elem.offset();
return {
x: offset.left - document.scrollLeft(),
y: offset.top - document.scrollTop()
};
}
$.extend($.simulate.prototype, {
simulateDrag: function() {
var i = 0,
target = this.target,
eventDoc = target.ownerDocument,
options = this.options,
center = options.handle === "corner" ? findCorner(target) : findCenter(target),
x = Math.floor(center.x),
y = Math.floor(center.y),
coord = { clientX: x, clientY: y },
dx = options.dx || (options.x !== undefined ? options.x - x : 0),
dy = options.dy || (options.y !== undefined ? options.y - y : 0),
moves = options.moves || 3;
this.simulateEvent(target, "mousedown", coord);
for (; i < moves ; i++) {
x += dx/moves;
y += dy/moves;
coord = {
clientX: Math.round(x),
clientY: Math.round(y)
};
this.simulateEvent(eventDoc, "mousemove", coord);
}
if ($.contains(eventDoc, target)) {
this.simulateEvent(target, "mouseup", coord);
this.simulateEvent(target, "click", coord);
} else {
this.simulateEvent(eventDoc, "mouseup", coord);
}
}
});
})(jQuery);
现在,您可以通过“模拟”点击
$(window).keypress(function(e){
if (e.keyCode == 108) {
$('._4-u2:hover .UFILikeLink').simulate('click');
}
});
干杯。
Like按钮在iframe内呈现,所以你在这里运气不佳。 – dfsq 2015-02-06 18:51:58