<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
.box {
position: relative;
width: 300px;
height: 30px;
border-bottom: 1px solid #ccc;
}
.box input {
border: 0;
width: 270px;
outline: none;
}
.box img {
position: absolute;
top: 2px;
right: 2px;
}
</style>
</head>
<body>
<div class="box">
<input type="password" class="ipt">
<img src="eye_bi.png">
</div>
<script>
var inpt = document.querySelector(input);
var eye = document.querySelector(img);
var flag = 0;
eye.onclick = function() {
if (flag == 0) {
eye.src = eye_open.png;
inpt.type = text;
flag = 1;
} else {
inpt.type = password;
eye.src = eye_bi.png
flag = 0;
}
}
</script>
</body>
</html>
