如何用JS制作以下网页

JavaScript012

如何用JS制作以下网页,第1张

这样的有几种写法，一个就是发送请求给后台，传的数据是邮箱，然后获取用户名，域名，顶级域名，然后渲染到页面上，但是这得后台配合，第二个就是自己声明假的数据，就是一个数组，里面有多个对象,比如：

<input type="text" placeholder="请输入邮箱">

<button>开始分析</button>

<div>

用户名:<span class="username"></span></br>

域名:<span class="domain"></span></br>

顶级域名:<span class="top-domain"></span>

</div>

<script type="text/javascript">

var arr = [{email:"[email protected]",username:"zhangsan",domain:"hao123",topDomain:".com"},{email:"[email protected]",username:"lisi",domain:"baidu",topDomain:".com"},{email:"[email protected]",username:"wangwu",domain:"taobao",topDomain:".com"}]

var inp = document.getElementsByTagName("input")[0]

var btn = document.getElementsByTagName("button")[0]

var username = document.getElementsByClassName("username")[0]

var domain = document.getElementsByClassName("domain")[0]

var topDomain = document.getElementsByClassName("top-domain")[0]

btn.onclick = function() {

var val = inp.value

username.textContent = ""

domain.textContent = ""

topDomain.textContent = ""

for (var i=0i<arr.lengthi++) {

if (val == arr[i].email) {

username.textContent = arr[i].username

domain.textContent = arr[i].domain

topDomain.textContent = arr[i].topDomain

}

}

}

</script>

第一、把所有复选框的name改成一样的

第二、(全选、反选)<script type="text/javascript">

//复选框全选

function checkAll(formvalue) {

var roomids = document.getElementsByName(formvalue)

for ( var j = 0j <roomids.lengthj++) {

if (roomids.item(j).checked == false) {

roomids.item(j).checked = true

}

}

}

//复选框全不选

function uncheckAll(formvalue) {

var roomids = document.getElementsByName(formvalue)

for ( var j = 0j <roomids.lengthj++) {

if (roomids.item(j).checked == true) {

roomids.item(j).checked = false

}

}

}

//复选框选择转换

function switchAll(formvalue) {

var roomids = document.getElementsByName(formvalue)

for ( var j = 0j <roomids.lengthj++) {

roomids.item(j).checked = !roomids.item(j).checked

}

}

</script>

第三、弹出新页面：<script>window.open(页面名)<script/>