function inputeven() {
let el = document.getElementsByTagName('input')[0];
let evtType = 'keyup';
let keyCode = 13;
let evtObj;
if (document.createEvent) {
if (window.KeyEvent) {//firefox
浏览器下模拟事件
evtObj = document.createEvent('KeyEvents');
evtObj.initKeyEvent(evtType, true, true, window, true, false, false, false, keyCode, 0)
} else {//chrome 浏览器下模拟事件
evtObj = document.createEvent('UIEvents');
evtObj.initUIEvent(evtType, true, true, window, 1);
delete evtObj.keyCode;
if (typeof evtObj.keyCode === 'undefined') {//为了模拟keycode
Object.defineProperty(evtObj, 'keyCode', {
value: keyCode
})
} else {
evtObj.key = String.fromCharCode(keyCode)
}
if (typeof evtObj.ctrlKey === 'undefined') {//为了模拟ctrl键
Object.defineProperty(evtObj, 'ctrlKey', {
value: true
})
} else {
evtObj.ctrlKey = true
}
}
el.dispatchEvent(evtObj)
} else if (document.createEventObject) {//IE 浏览器下模拟事件
evtObj = document.createEventObject();
evtObj.keyCode = keyCode;
el.fireEvent('on' + evtType, evtObj)
}
}
inputeven();