js点击小眼睛显示隐藏密码框的密码
该按钮类似于登录页面后面的小眼睛 点击显示密码 再点击密码变星号
核心思路：把密码框类型改为文本框即可看见里面的密码
利用flag变量 判断flag的值 如果是1就切换文本框 flag设置为0
如果是0 就切换为密码框 flag设置为1
注：如果有这种按钮随时切换的都可以使用变量flag
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>练习</title>
<style>
.box {
position: relative;
width: 300px;
border: 1px solid #ccc;
}
.box input {
width: 270px;
height: 30px;
border: 0;
outline: none;
}
.box img {
position: absolute;
top: 6px;
right: 10px;
width: 20px;
}
</style>
</head>
<body>
<div class="box">
<input type="password" id="ipt" />
<label for="">
<img src="../img/closed.png" alt="" id="img">
<lable>
</div>
</body>
<script>
var ipt = document.getElementById(ipt);
var img = document.getElementById(img);
var flag = 0;
img.onclick = function() {
if (flag == 0) { //判断flag==0
ipt.type = text;
img.src = ../img/open.png;
flag = 1; //赋值
} else {
ipt.type = password;
img.src = ../img/closed.png;
flag = 0; //赋值
}
}
</script>
</html>
