<a href="#">问题请教大家?

本文探讨了一个JSP页面中onload事件触发的问题。当点击带有onload事件的超链接时,即使链接为空,该事件依然会被触发,并导致页面跳转到自身URL加#的情况。文章寻求解决在特定条件下阻止onload事件触发的方法。
<body onload="javascript:alert('page Load!')">
<a href="#">This is my JSP page.</a> <br>
</body>


这个页面的访问路径是http://localhost:8080/TestHref/MyJsp.jsp
当我点击此页面的时候onload事件还是被触发?咋回事呢?
当触发完毕后页面跳转到http://localhost:8080/TestHref/#,还不是不明白怎么回事?

如果当连接为空的时候,我希望点击超连接不触发onload事件,请问大家如何解决呢?
<template> <div class="navbar" :style="{ backgroundColor: sideTheme === &#39;theme-dark&#39; ? variables.menuBackground : variables.headerBackgroundColor, width: settingsStore.topNav ? &#39;&#39; : &#39;600px&#39;, }" > <!-- width:showSearchs? &#39;745px&#39; : &#39;300px&#39; --> <!-- <hamburge id="hamburger-container" :is-active="appStore.sidebar.opened" class="hamburger-container" @toggleClick="toggleSideBar" /> --> <!-- <breadcrumb id="breadcrumb-container" class="breadcrumb-container" v-if="!settingsStore.topNav" /> --> <top-nav id="topmenu-container" class="topmenu-container" v-if="settingsStore.topNav" /> <div class="right-menu"> <template v-if="appStore.device !== &#39;mobile&#39;"> <div class="inputDemo notice-box"> <el-dropdown trigger="click" @command="updateBubgPermissions" :max-height="300" > <span class="el-dropdown-link"> <span class="dept_text"> {{ bubg }} </span> <el-icon class="el-icon--right"> <arrow-down /> </el-icon> </span> <template #dropdown> <el-dropdown-menu> <el-dropdown-item v-for="(item, index) in bubgList" :key="index" :command="item" :disabled="item.disabled" >{{ item.label }}</el-dropdown-item > </el-dropdown-menu> </template> </el-dropdown> </div> <!-- <el-switch v-if="isAdmin" v-model="isShould" @change="switchChange" class="ml-2" inline-prompt style="--el-switch-on-color: #13ce66; --el-switch-off-color: #ff4949" active-text="V1" inactive-text="V2" /> --> <el-badge is-dot class="item" :hidden="reddotsIndicateMessage"> <el-icon class="icon_message" @click="openMessage"><Bell /></el-icon> </el-badge> <header-search id="header-search" class="right-menu-item" @showSearch="showSearch" /> <!-- <screenfull id="screenfull" class="right-menu-item hover-effect" /> --> <!-- <el-button @click="openAiBtn">Ai</el-button> --> <!-- <span ><img @click="openAiBtn" style="width: 32px; cursor: pointer" src="../../assets/images/AItubiao.png" alt="" /></span> --> <LangSelect @selectCallback="langSelectCallback" /> <!-- <el-tooltip content="布局大小" effect="dark" placement="bottom"> <size-select id="size-select" class="right-menu-item hover-effect" /> </el-tooltip> --> </template> <div class="avatar-container"> <el-dropdown @command="handleCommand" class="right-menu-item hover-effect" trigger="click" > <div class="avatar-wrapper"> <img v-if="userStore.avatar" :src="userStore.avatar" class="user-avatar" /> <img v-else src="@/assets/images/profile.jpg" class="user-avatar" /> <!-- <el-icon><caret-bottom /></el-icon> --> <div class="userName">{{ userStore.nickName }}</div> </div> <template #dropdown> <el-dropdown-menu> <router-link to="/user/profile"> <el-dropdown-item>个人中心</el-dropdown-item> </router-link> <el-dropdown-item command="changeSys"> <span>切换后台</span> </el-dropdown-item> <el-dropdown-item command="setLayout"> <span>布局设置</span> </el-dropdown-item> <a data-v-bd143a29="" href="https://hiway.feishu.cn/wiki/WgiDw97BmiNYHKkEBZvclRE5nce" class=""> <li data-el-collection-item="" aria-disabled="false" class="el-dropdown-menu__item" tabindex="-1" role="menuitem"> 更新日志 </li> </a> <el-dropdown-item v-if="!isFeishu()" divided command="logout"> <span>退出登录</span> </el-dropdown-item> <el-dropdown-item v-else divided command="logoutFeishu"> <span>重新进入</span> </el-dropdown-item> </el-dropdown-menu> </template> </el-dropdown> </div> <!-- <p class="user_name">{{ userStore.nickName }}</p> --> </div> <el-drawer v-model="messageVisi" title="消息列表" size="60%"> <MessageDrawer v-if="messageVisi" ref="messageDrawer" @messageCount="getMessageCount" /> </el-drawer> <el-dialog ref="aiContainer" class="ai-contaoner" v-model="aiDialogVisible" title="向 Ai 请教" width="45%" :before-close="handleClose" > <!-- <template #header="{ close, titleId, titleClass }"> <div class="my-header"> <div>向 Ai 请教</div> </div> </template> --> <AiMessage @scrollToBottom="scrollToBottomCak"></AiMessage> <!-- <template #footer> <div class="dialog-footer"> <el-button type="primary" @click="aiDialogVisible = false"> 取消 </el-button> </div> </template> --> </el-dialog> </div> </template> <script setup> import { ref, watch, onMounted, onUnmounted, computed } from &#39;vue&#39; import { messages, connect, disconnect } from &#39;./websocket-client&#39; // 引入WebSocket客户端代码 import AiMessage from &#39;./aiMessage.vue&#39; import { ElNotification, ElMessageBox, ElMessage, ElLoading, } from &#39;element-plus&#39; import MessageDrawer from &#39;@/components/messageDrawer&#39; import { getUserNotifyCount } from &#39;@/api/bpm/notify&#39; import Breadcrumb from &#39;@/components/Breadcrumb&#39; import TopNav from &#39;@/components/TopNav&#39; // import Hamburger from "@/components/Hamburger"; import Screenfull from &#39;@/components/Screenfull&#39; import SizeSelect from &#39;@/components/SizeSelect&#39; import HeaderSearch from &#39;@/components/HeaderSearch&#39; import useAppStore from &#39;@/store/modules/app&#39; import useUserStore from &#39;@/store/modules/user&#39; import useSettingsStore from &#39;@/store/modules/settings&#39; import variables from &#39;@/assets/styles/variables.module.scss&#39; import LangSelect from &#39;@/components/LangSelect&#39; import { getDeptByBuDeptTreeselect } from &#39;@/api/login&#39; import useTagsViewStore from &#39;@/store/modules/tagsView&#39; const { proxy } = getCurrentInstance() const router = useRouter() const appStore = useAppStore() const userStore = useUserStore() const settingsStore = useSettingsStore() const showSearchs = ref(false) const bubg = ref(null) const bubgList = ref([]) const route = useRoute() const sideTheme = computed(() => settingsStore.sideTheme) let messageVisi = ref(false) const aiDialogVisible = ref(false) let reddotsIndicateMessage = ref(true) const visitedViews = computed(() => useTagsViewStore().visitedViews) const isShould = ref(false) const aiContainer = ref() const isShoulds = computed(() => { const flag = localStorage.getItem(&#39;isShould&#39;) return flag }) watch( () => isShoulds, (nval, oval) => { if (nval.value === &#39;2&#39;) { isShould.value = false } else { isShould.value = true } }, { immediate: true } ) const isAdmin = computed(() => { if (userStore.userName === &#39;admin&#39;) { return true } else { return false } }) function toggleSideBar() { appStore.toggleSideBar() } function handleCommand(command) { switch (command) { case &#39;changeSys&#39;: window.open(`${window.location.origin}/qms-base-web/index`, &#39;_self&#39;) break case &#39;setLayout&#39;: setLayout() break case &#39;logout&#39;: logout() break case &#39;logoutFeishu&#39;: logoutFeishu() break default: break } } // 国际化回调 function langSelectCallback() { // 头部信息 // 强制刷新子组件 this.$emit(&#39;selectCallback&#39;) } function scrollToBottomCak() { var elDialogBody = document.querySelector(&#39;.el-dialog__body&#39;) elDialogBody.scrollTop = elDialogBody.scrollHeight } function logout() { ElMessageBox.confirm(&#39;确定注销并退出系统吗?&#39;, &#39;提示&#39;, { confirmButtonText: &#39;确定&#39;, cancelButtonText: &#39;取消&#39;, type: &#39;warning&#39;, }) .then(() => { userStore.LogOut().then(() => { location.href = &#39;/qmsMain/loginDefault?v=&#39; + new Date().getTime() }) }) .catch(() => {}) } function logoutFeishu() { ElMessageBox.confirm(&#39;确定重新登入系统么?&#39;, &#39;提示&#39;, { confirmButtonText: &#39;确定&#39;, cancelButtonText: &#39;取消&#39;, type: &#39;warning&#39;, }) .then(() => { userStore.LogOut().then(() => { location.href = &#39;/qmsMain/login&#39; }) }) .catch(() => {}) } function openMessage() { messageVisi.value = true } function handleLookClick() {} const emits = defineEmits([&#39;setLayout&#39;]) function setLayout() { emits(&#39;setLayout&#39;) } // watch(showSearchs, (value) => { // showSearchs.value = value // }) function isFeishu() { return /Lark|Feishu/i.test(navigator.userAgent) } function updateBubgPermissions(e) { bubg.value = e.label localStorage.setItem(&#39;groupName&#39;, e.label) localStorage.setItem(&#39;groupId&#39;, e.code) // this.$store.commit("SET_GROUP_ID", selectedItem.code); // this.$store.commit("SET_GROUP_NAME", selectedItem.label); // this.refreshView(); refreshSelectedTag() // 刷新当前页面 // closeAllTags() //关闭所有页面 } function showSearch(flag) { showSearchs.value = flag } function getBubgData() { getDeptByBuDeptTreeselect().then((response) => { let checkList = [] let isAdmin = userStore.userName === &#39;admin&#39; ? true : false if (userStore.permissionsDataBubgDtos.length == 0) { checkList.push(userStore.groupId) } else { checkList = userStore.permissionsDataBubgDtos } bubgList.value = response.data bubg.value = userStore.groupName || &#39;&#39; if (!isAdmin) { bubgList.value.forEach((bubg) => { if (checkList == null) { bubg.disabled = true } else { if (checkList.indexOf(bubg.code) == -1) { bubg.disabled = true } else { bubg.disabled = false } } }) } else { bubgList.value.forEach((bubg) => { bubg.disabled = false }) } bubgList.value = bubgList.value.filter(item => !item.disabled) }) } // 获取消息数量 function getMessageCount(count) { showReddotsIndicateMessage(count) } // 控制消息红点是否显示 function showReddotsIndicateMessage(count) { reddotsIndicateMessage.value = count <= 0 } function refreshSelectedTag(view) { if (route.meta.link) { // useTagsViewStore().delIframeView(route); proxy.$bus.$emit(&#39;refreshIframe&#39;, route.path) // 触发刷新当前页面(iframe) return } let pathStr = route.path // 必须要配置 if (pathStr.includes(&#39;bpm&#39;)) { proxy.$bus.$emit(&#39;refreshPage-bpm&#39;, route.path) // 触发刷新当前页面 } else { proxy.$tab.refreshPage(route) } } function openAiBtn() { aiDialogVisible.value = true } function switchChange(e) { if (e) { localStorage.setItem(&#39;isShould&#39;, &#39;1&#39;) } else { localStorage.setItem(&#39;isShould&#39;, &#39;2&#39;) } closeAllTags() } function toLastView(visitedViews, view) { const latestView = visitedViews.slice(-1)[0] if (latestView) { router.push(latestView.fullPath) } else { // now the default is to redirect to the home page if there is no tags-view, // you can adjust it according to your needs. if (view.name === &#39;Dashboard&#39;) { // to reload home page router.replace({ path: &#39;/redirect&#39; + view.fullPath }) } else { router.push(&#39;/&#39;) } } } function closeAllTags(view) { const originObj = { fullPath: &#39;/index&#39;, path: &#39;/index&#39;, name: &#39;Index&#39;, meta: { title: &#39;首页&#39;, icon: &#39;dashboard&#39;, affix: true, }, title: &#39;首页&#39;, } proxy.$tab.closeAllPage().then(({ visitedViews }) => { toLastView(visitedViews, originObj) }) } watch( () => messages.value, (newMessages) => { if (newMessages.length > 0) { const latestMessage = newMessages[newMessages.length - 1] const message = JSON.parse(latestMessage.text) // 播放提示音 const audio = new Audio(&#39;/sounds/sound.mp3&#39;) // 这里放置提示音文件的路径 audio.play() const notificationInstance = ElNotification({ title: message.title, message: message.content, type: message.type.toLowerCase() || &#39;info&#39;, position: &#39;top-right&#39;, // 设置弹出位置为右上角 duration: 30000, // 30秒 showClose: true, // 显示关闭按钮 onClick: () => { messageVisi.value = true // 打开消息抽屉 // 延时 2 秒后关闭通知 setTimeout(() => { notificationInstance.close() // 手动关闭特定的通知实例 }, 2000) // 2000 毫秒 = 2 秒 }, }) } }, { deep: true } // 设置深度监听 ) // 在组件挂载时连接 WebSocket onMounted(() => { connect() getUserNotifyCount() .then((res) => { showReddotsIndicateMessage(res.data) }) .catch((err) => { console.error(&#39;Error fetching notifications:&#39;, err) }) }) // 在组件卸载时断开 WebSocket 连接 onUnmounted(() => { disconnect() }) getBubgData() </script> <style lang="scss" scoped> .navbar { height: 34px; overflow: hidden; position: relative; background: #eff2fb !important; box-shadow: 0 1px 4px rgba(0, 21, 41, 0.08); .hamburger-container { line-height: 46px; height: 100%; float: left; cursor: pointer; transition: background 0.3s; -webkit-tap-highlight-color: transparent; &:hover { background: rgba(0, 0, 0, 0.025); } } .breadcrumb-container { float: left; } .topmenu-container { position: absolute; background-color: #eff2fb; } .errLog-container { display: inline-block; vertical-align: top; } .right-menu { float: right; height: 100%; line-height: 34px; display: flex; &:focus { outline: none; } .right-menu-item { display: inline-block; padding-right: 8px; height: 100%; font-size: 18px; color: #5a5e66; vertical-align: text-bottom; // color: #fff; &.hover-effect { cursor: pointer; transition: background 0.3s; &:hover { background: rgba(0, 0, 0, 0.025); } } } .avatar-container { // margin-right: 40px; .avatar-wrapper { // margin-top: 5px; position: relative; display: flex; align-items: center; height: 100%; .user-avatar { cursor: pointer; width: 25px; height: 25px; border-radius: 20px; } i { cursor: pointer; position: absolute; right: -20px; top: 25px; font-size: 12px; } } } } } ::v-deep .el-badge__content.is-fixed { top: 10px; } ::v-deep .el-badge__content.is-fixed.is-dot { right: 13px; } .icon_message { height: 100%; margin: 0px 10px; cursor: pointer; } .header_title { display: inline-block; height: 100%; width: 300px; line-height: 50px; padding-left: 10px; font-family: &#39;Microsoft YaHei&#39;; // line-height: 1em; color: #f0f0f0; font-weight: bold; font-size: 30px; text-shadow: 0px 0px 0 rgb(216, 216, 216), 1px 1px 0 rgb(192, 192, 192), 2px 2px 0 rgb(168, 168, 168), 3px 3px 0 rgb(144, 144, 144), 4px 4px 0 rgb(120, 120, 120), 5px 5px 0 rgb(96, 96, 96), 6px 6px 5px rgba(0, 0, 0, 0.35), 6px 6px 1px rgba(0, 0, 0, 0.5), 0px 0px 5px rgba(0, 0, 0, 0.2); } .user_name { display: inline-block; height: 100%; line-height: 34px; margin: 0px; } .inputDemo { display: flex; align-items: center; white-space: nowrap; input { width: 150px; font-size: 12px; border: none; background: none; text-align: center; font-weight: bold; } .el-input__suffix { i { margin-left: 0.06rem; font-weight: bold; } } /* WebKit browsers */ ::-webkit-input-placeholder { font-weight: bold; } } ::v-deep .ai-contaoner .el-dialog__body { height: calc(100vh - 180px); overflow-y: auto; padding: 0px; background-color: #292a2d; // position: relative; } ::v-deep .el-select .el-input__wrapper { background-color: #eff2fb !important; } ::v-deep .ai-contaoner .el-dialog__header { color: #fff; margin-right: 0px; background-image: linear-gradient( to right, rgb(96, 62, 132), rgb(91, 96, 195) ); } ::v-deep .ai-contaoner .el-dialog__title { color: #fff; } ::v-deep .ai-contaoner .el-dialog__close { color: #fff; } .userName { height: 100%; width: 80px; line-height: 35px; // display: flex; // align-items: center; padding-left: 5px; font-size: 14px; white-space: nowrap; /* 确保文本在一行内显示 */ overflow: hidden; /* 隐藏溢出的内容 */ text-overflow: ellipsis; /* 使用打点表示文字溢出 */ } .el-dropdown-link { .dept_text { display: inline-block; white-space: nowrap; width: 200px; text-align: right; //overflow: hidden; /* 隐藏溢出的内容 */ //text-overflow: ellipsis; /* 使用打点表示文字溢出 */ } } @keyframes gradient-blink-animation { 0% { color: #ff0000; /* 红色 */ } 20% { color: #ffaa00; /* 橙色 */ } 40% { color: #ffff00; /* 黄色 */ } 60% { color: #00ff00; /* 绿色 */ } 80% { color: #0000ff; /* 蓝色 */ } 100% { color: #aa00ff; /* 紫色 */ } } </style> dept_text下拉选择自适应宽度
最新发布
09-29
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