技術標籤：前端jquery

驗證碼倒計時

直接上html

<ul class="ulist">
    <li class="group">
        <div class="controls">
            <input type="text" id="phone" class="txt" placeholder="輸入手機號">
        </div>
    <
 
/li>
    <li class="group">
        <div class="controls">
            <input type="text" id="code" class="txt" placeholder="輸入驗證碼">
            <button class="btn btn-small get-code" onclick="getCode(this)"
 
 id="J_getCode">獲取驗證碼</button>
            <button class="btn btn-small reset-code" id="J_resetCode" style="display:none;"><span id="J_second">60</span>秒後重發</button>
        </div>
    </li>
</ul>

js

<script>
 

/*獲取驗證碼*/
var isPhone = 1;

function getCode(e) {
	checkPhone(); //驗證手機號碼    if (isPhone) {
        resetCode(); //倒計時
    } else {
        $('#phone').focus();
    }
}
//驗證手機號碼
function checkPhone() {
    var phone = $('#phone').val();
    var pattern = /^1[0-9]{10}$/;
    isPhone = 1;
    if (phone == '') {
        alert('請輸入手機號碼');
        isPhone = 0;
        return;
    }
    if (!pattern.test(phone)) {
        alert('請輸入正確的手機號碼');
        isPhone = 0;
        return;
    }
}
//倒計時
function resetCode() {
    $('#J_getCode').hide();
    $('#J_second').html('60');
    $('#J_resetCode').show();
    var second = 60;
    var timer = null;
    timer = setInterval(function() {
        second -= 1;
        if (second > 0) {
            $('#J_second').html(second);
        } else {
            clearInterval(timer);
            $('#J_getCode').show();
            $('#J_resetCode').hide();
        }
    }, 1000);
}
</script>

引用： jquery H5驗證碼登入校驗倒計時