登录验证码倒计时
<!DOCTYPE html>
<html lang="zh-CN">
<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>表单验证</title>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
</head>
<body>
<div id="app">
<el-form :model="form" inline>
<el-form-item label="输入验证码" prop="code">
<el-input v-model="form.code" placeholder="请输入验证码" />
</el-form-item>
<el-form-item>
<el-button @click="send" type="success" :disabled="!show">
获取验证码
<span v-show="!show" class="count">({{count}}s)</span>
</el-button>
</el-form-item>
</el-form>
</div>
<script>
const TIME_COUNT = 60; //更改倒计时时间
new Vue({
el: "#app",
data: {
show: true, // 初始启用按钮
count: '', // 初始化次数
timer: null,
form: {
code: ""
}
},
methods: {
send() {
if (!this.timer) {
this.count = TIME_COUNT;
this.show = false;
this.timer = setInterval(() => {
if (this.count > 0 && this.count <= TIME_COUNT) {
this.count--;
} else {
this.show = true;
clearInterval(this.timer); // 清除定时器
this.timer = null;
}
}, 1000)
}
}
}
})
</script>
</body>
</html>
