vue實現簡訊驗證功能
阿新 • • 發佈：2019-01-08
平時我們在專案中進行註冊等的時候,會經常用到簡訊驗證的功能,但是現在現在很多簡訊驗證都是存在下面幾個問題,例如簡訊驗證時間為60s的時候,
1. 當點選完按鈕時,倒計時還沒到60s過完時,重新整理瀏覽器,驗證碼按鈕又可以重新點選
2.當點選按鈕倒計時開始,例如在50s的時候我關閉了瀏覽器,過了5s後,我在開啟,此時時間倒計時的時間應該是45s左右,但是當重新開啟瀏覽器的時候,按鈕又可以重新點選了
為了解決上面的兩個問題,就需要把時間都寫到localstorage裡面去,當開啟頁面的時候,就去localstorage裡面去取,我這裡就貼上我的解決方法,因為前幾天有個vue的專案用到該方法,所以我這裡就寫個vue的方法出來吧
元件裡面的html程式碼:
<div class="mtui-cell__ft" @click="getCode">
<button class="mtui-vcode-btn mtui-text-center" v-if="flag">獲取簡訊</button>
<button class="mtui-vcode-btn mtui-text-center" v-if="!flag">剩餘{{second}}s</button>
</div>
重點來啦
在data裡面定義幾個需要用到的變數:
second: 60,
flag: true,
timer: null // 該變數是用來記錄定時器的,防止點選的時候觸發多個setInterval
獲取簡訊驗證的方法:getCode() {
let that = this;
if (that.flag) {
that.flag = false;
let interval = window.setInterval(function() {
that.setStorage(that.second);
if (that.second-- <= 0) {
that.second = 60;
that.flag = true;
window.clearInterval(interval);
}
}, 1000);
}
}
寫入和讀取localstorage:
setStorage(parm) {
localStorage.setItem("dalay", parm);
localStorage.setItem("_time", new Date().getTime());
},
getStorage() {
let localDelay = {};
localDelay.delay = localStorage.getItem("dalay");
localDelay.sec = localStorage.getItem("_time");
return localDelay;
}
防止頁面重新整理是驗證碼失效:
judgeCode() {
let that = this;
let localDelay = that.getStorage();
let secTime = parseInt(
(new Date().getTime() - localDelay.sec) / 1000
);
console.log(localDelay);
that.flag = true; console.log("已過期"); } else { that.flag = false; let _delay = localDelay.delay - secTime; that.second = _delay; that.timer = setInterval(function() { if (_delay > 1) { _delay--; that.setStorage(_delay); that.second = _delay; that.flag = false; } else { that.flag = true; window.clearInterval(that.timer); } }, 1000); } }然後在html掛載頁面完成後的生命鉤子(mounted)中呼叫judgeCode()方法就能實現該功能了