try {
var selector1 = "._3-8y:first-child";
var evt = document.createEvent("MouseEvents");
var selector = document.querySelectorAll("._3-8y:first-child")[0];
console.log(selector)
var center_x = 2,
center_y = 2;
var type = 'mouseover';
try {
var pos = selector.getBoundingClientRect();
center_x = Math.floor((pos.left + pos.right) / 2);
center_y = Math.floor((pos.top + pos.bottom) / 2);
console.log("center_x", center_x);
console.log("center_y", center_y);
} catch (e) {}
evt.initMouseEvent('mouseover', true, true, window, 1, 1, 1, 1326, 157, false, false, false, false, 0, selector);
// dispatchEvent return value is false if at least one of the event
// handlers which handled this event called preventDefault;
// so we cannot returns this results as it cannot accurately informs on the status
// of the operation
// let's assume the event has been sent ok it didn't raise any error
selector.dispatchEvent(evt);
//second
var selector1 = "._3-8y:first-child";
var evt = document.createEvent("MouseEvents");
var selector = document.querySelectorAll("._3-8y:first-child")[0];
console.log(selector)
var center_x = 2,
center_y = 2;
var type = 'mouseover';
try {
var pos = selector.getBoundingClientRect();
center_x = Math.floor((pos.left + pos.right) / 2);
center_y = Math.floor((pos.top + pos.bottom) / 2);
console.log("center_x", center_x);
console.log("center_y", center_y);
} catch (e) {}
evt.initMouseEvent('mouseout', true, true, window, 1, 1, 1, 1326, 155, false, false, false, false, 0, selector);
// dispatchEvent return value is false if at least one of the event
// handlers which handled this event called preventDefault;
// so we cannot returns this results as it cannot accurately informs on the status
// of the operation
// let's assume the event has been sent ok it didn't raise any error
selector.dispatchEvent(evt);
//second
// return true;
} catch (e) {
console.log("Failed dispatching " + type + "mouse event on " + selector + ": " + e, "error");
// return false;
}
//
相关链接:
https://stackoverflow.com/questions/28672152/pass-an-event-to-an-iframe-from-the-parent-window-javascript
var iframe = document.getElementById('something'); var iframeEvent = new Event('iframe-keypress'); document.addEventListener('keypress', function (e) { iframe.dispatchEvent(iframeEvent); }); iframe.addEventListener('iframe-keypress', function (e) { console.log(e); });
https://www.3till7.net/2014/08/09/triggering-events-in-an-iframe/index.html
// parent page's JavaScript var iframe = $('iframe'); var iframe_select = iframe.contents().find('select#menu'); iframe_select.val(value); var ev = iframe[0].contentWindow.document.createEvent('UIEvents'); ev.initUIEvent('change', true, true, window, 1); iframe_select[0].dispatchEvent(ev);