仙尊脔到她哭h粗话h,小蜜桃3,亚洲天然素人无码专区,国产精品久久久久av,成人性生交大片免费

推薦答案

小(xiao)鋒 2023-05-22 13:49:07 

本回答由問問達人(ren)推(tui)薦

element.addEventListener(event, function, useCapture);

element.removeEventListener(event, function, useCapture);

event.preventDefault();

event.stopPropagation();

event.target;

event.currentTarget;

event.keyCode; // 返回按下的(de)鍵(jian)(jian)的(de)鍵(jian)(jian)碼
event.key; // 返回(hui)按(an)下的鍵的鍵名

event.preventDefault();

其他答案

• 匿(ni)名用(yong)戶 2023-05-22 13:49:07 

  　　JavaScript 中(zhong)常(chang)用(yong)的(de)(de)(de)(de)(de)事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)相(xiang)關方(fang)法包括：1. `addEventListener(event, callback, useCapture)`：向元(yuan)素(su)添加(jia)事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)監(jian)聽器(qi)，用(yong)于捕獲(huo)指定事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)發生(sheng)時(shi)的(de)(de)(de)(de)(de)回調函數。2. `removeEventListener(event, callback, useCapture)`：從元(yuan)素(su)中(zhong)移除事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)監(jian)聽器(qi)。3. `preventDefault()`：阻(zu)(zu)(zu)止事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)默(mo)認行為，例如(ru)阻(zu)(zu)(zu)止表單提交或(huo)鏈接跳轉。4. `stopPropagation()`：停止事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)傳播，阻(zu)(zu)(zu)止事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)冒泡到(dao)父元(yuan)素(su)或(huo)捕獲(huo)到(dao)更(geng)上層的(de)(de)(de)(de)(de)元(yuan)素(su)。5. `target`：事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)對(dui)(dui)(dui)象的(de)(de)(de)(de)(de)屬(shu)性(xing)(xing)，表示(shi)(shi)觸(chu)發事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)目標(biao)元(yuan)素(su)。6. `currentTarget`：事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)對(dui)(dui)(dui)象的(de)(de)(de)(de)(de)屬(shu)性(xing)(xing)，表示(shi)(shi)當(dang)前(qian)(qian)正在(zai)處(chu)理(li)事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)元(yuan)素(su)。7. `event.type`：事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)對(dui)(dui)(dui)象的(de)(de)(de)(de)(de)屬(shu)性(xing)(xing)，表示(shi)(shi)事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)的(de)(de)(de)(de)(de)類型，如(ru) "click"、"keyup" 等。8. `event.keyCode`：事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)對(dui)(dui)(dui)象的(de)(de)(de)(de)(de)屬(shu)性(xing)(xing)，在(zai)鍵盤事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)中(zhong)表示(shi)(shi)按下的(de)(de)(de)(de)(de)鍵的(de)(de)(de)(de)(de)鍵碼值(zhi)。9. `event.clientX` 和(he)(he) `event.clientY`：事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)對(dui)(dui)(dui)象的(de)(de)(de)(de)(de)屬(shu)性(xing)(xing)，在(zai)鼠標(biao)事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)中(zhong)表示(shi)(shi)鼠標(biao)相(xiang)對(dui)(dui)(dui)于瀏覽(lan)器(qi)窗(chuang)口的(de)(de)(de)(de)(de)水平和(he)(he)垂直坐標(biao)。10. `event.preventDefault()` 和(he)(he) `event.stopPropagation()`：事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)對(dui)(dui)(dui)象的(de)(de)(de)(de)(de)方(fang)法，與前(qian)(qian)面提到(dao)的(de)(de)(de)(de)(de)方(fang)法功能(neng)相(xiang)同。這些(xie)方(fang)法和(he)(he)屬(shu)性(xing)(xing)可以通過事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)對(dui)(dui)(dui)象來訪問(wen)和(he)(he)使用(yong)，它(ta)們能(neng)夠幫助(zhu)您在(zai) JavaScript 中(zhong)對(dui)(dui)(dui)事(shi)(shi)(shi)件(jian)(jian)(jian)(jian)進行處(chu)理(li)和(he)(he)控制(zhi)。

• 匿名用戶(hu)  2023-05-22 13:49:07

  　　首先，我(wo)(wo)(wo)們可(ke)(ke)以(yi)(yi)使用(yong)(yong) addEventListener 方法(fa)(fa)(fa)來為元(yuan)(yuan)素(su)添(tian)加(jia)(jia)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)監(jian)(jian)(jian)聽(ting)器。通(tong)過(guo)指定(ding)(ding)要監(jian)(jian)(jian)聽(ting)的(de)(de)(de)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)類型和相應的(de)(de)(de)回(hui)調函(han)數，我(wo)(wo)(wo)們可(ke)(ke)以(yi)(yi)在特定(ding)(ding)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)發(fa)(fa)生時(shi)執行(xing)自定(ding)(ding)義的(de)(de)(de)代碼。例(li)(li)如(ru)(ru)(ru)，我(wo)(wo)(wo)們可(ke)(ke)以(yi)(yi)使用(yong)(yong) addEventListener 方法(fa)(fa)(fa)為按鈕元(yuan)(yuan)素(su)添(tian)加(jia)(jia)點擊事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)監(jian)(jian)(jian)聽(ting)器，當(dang)用(yong)(yong)戶點擊按鈕時(shi)，相應的(de)(de)(de)回(hui)調函(han)數將被觸(chu)(chu)發(fa)(fa)。另一個(ge)(ge)常(chang)用(yong)(yong)的(de)(de)(de)方法(fa)(fa)(fa)是 removeEventListener，它(ta)允許(xu)我(wo)(wo)(wo)們從元(yuan)(yuan)素(su)中移除特定(ding)(ding)的(de)(de)(de)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)監(jian)(jian)(jian)聽(ting)器。這在我(wo)(wo)(wo)們不再需(xu)要某個(ge)(ge)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)的(de)(de)(de)監(jian)(jian)(jian)聽(ting)器時(shi)非常(chang)有用(yong)(yong)，可(ke)(ke)以(yi)(yi)幫助(zhu)我(wo)(wo)(wo)們清理(li)(li)不需(xu)要的(de)(de)(de)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)處(chu)理(li)(li)程(cheng)序，以(yi)(yi)避(bi)免可(ke)(ke)能的(de)(de)(de)內存泄漏(lou)。除了(le)添(tian)加(jia)(jia)和移除事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)監(jian)(jian)(jian)聽(ting)器，JavaScript 還提供了(le)其他一些(xie)常(chang)用(yong)(yong)的(de)(de)(de)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)相關方法(fa)(fa)(fa)。例(li)(li)如(ru)(ru)(ru)，preventDefault 方法(fa)(fa)(fa)可(ke)(ke)以(yi)(yi)用(yong)(yong)來阻(zu)(zu)止(zhi)元(yuan)(yuan)素(su)默認的(de)(de)(de)行(xing)為，例(li)(li)如(ru)(ru)(ru)阻(zu)(zu)止(zhi)表單(dan)提交(jiao)(jiao)或超鏈接跳轉。這對(dui)于(yu)實現(xian)自定(ding)(ding)義的(de)(de)(de)交(jiao)(jiao)互行(xing)為非常(chang)有用(yong)(yong)。另一個(ge)(ge)常(chang)見的(de)(de)(de)方法(fa)(fa)(fa)是 stopPropagation，它(ta)可(ke)(ke)以(yi)(yi)阻(zu)(zu)止(zhi)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)冒(mao)(mao)泡(pao)。事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)冒(mao)(mao)泡(pao)是指當(dang)一個(ge)(ge)元(yuan)(yuan)素(su)觸(chu)(chu)發(fa)(fa)某個(ge)(ge)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)時(shi)，它(ta)的(de)(de)(de)父(fu)級元(yuan)(yuan)素(su)也會收(shou)到該事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)的(de)(de)(de)通(tong)知。通(tong)過(guo)調用(yong)(yong) stopPropagation 方法(fa)(fa)(fa)，我(wo)(wo)(wo)們可(ke)(ke)以(yi)(yi)阻(zu)(zu)止(zhi)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)繼續向父(fu)級元(yuan)(yuan)素(su)傳播，從而避(bi)免觸(chu)(chu)發(fa)(fa)不必要的(de)(de)(de)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)處(chu)理(li)(li)程(cheng)序。此(ci)外(wai)，JavaScript 還提供了(le)一些(xie)其他常(chang)用(yong)(yong)的(de)(de)(de)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)方法(fa)(fa)(fa)，例(li)(li)如(ru)(ru)(ru) target 屬(shu)性(xing)可(ke)(ke)以(yi)(yi)用(yong)(yong)來獲(huo)取觸(chu)(chu)發(fa)(fa)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)的(de)(de)(de)元(yuan)(yuan)素(su)，keyCode 屬(shu)性(xing)可(ke)(ke)以(yi)(yi)獲(huo)取按下的(de)(de)(de)鍵(jian)盤鍵(jian)的(de)(de)(de)代碼等等。這些(xie)方法(fa)(fa)(fa)和屬(shu)性(xing)可(ke)(ke)以(yi)(yi)幫助(zhu)我(wo)(wo)(wo)們更好地處(chu)理(li)(li)事(shi)(shi)(shi)(shi)件(jian)(jian)(jian)(jian)(jian)，并實現(xian)更豐富(fu)的(de)(de)(de)交(jiao)(jiao)互體驗。

上一篇

SOA框(kuang)架(jia)有哪些優(you)勢？

下一篇

SOA框架(jia)的組(zu)件和技術有哪些？