最近做項目時碰到一個需求，就是在移動端支付頁面點擊支付按鈕彈出一個支付鍵盤，類似于支付寶的那種。由于項目只是單純的手機網站，而并非app，所以這個功能得由前端來實現。話不多說，先上圖看看效果。
尼瑪，這不就是支付寶app那個支付鍵盤嗎？ 沒錯，咱們UI就是參照支付寶做的這個鍵盤。你可能會問，為什么不直接調用支付寶提供的支付接口呢。額，因為項目需要，這里就不多解釋了。
我們先看一下實現后的效果圖
HTML部分
<!-- 支付鍵盤 --> <divclass="pay-container"> <divclass="pay-title"> <spanclass="pay-title-remove">×</span> 輸入支付密碼 </div> <divclass="pay-body"> <divclass="input-container"> <inputclass="input-item"type="password"readonly> <inputclass="input-item"type="password"readonly> <inputclass="input-item"type="password"readonly> <inputclass="input-item"type="password"readonly> <inputclass="input-item"type="password"readonly> <inputclass="input-item"type="password"readonly> </div> <divclass="forgetPwd-container"> <aclass="forgetPwd"href="">忘記密碼？</a> </div> <divclass="key-container"> <divclass="key-item">1</div> <divclass="key-item">2</div> <divclass="key-item">3</div> <divclass="key-item">4</div> <divclass="key-item">5</div> <divclass="key-item">6</div> <divclass="key-item">7</div> <divclass="key-item">8</div> <divclass="key-item">9</div> <divclass="key-item empty"></div> <divclass="key-item">0</div> <divclass="key-item remove"></div> </div> </div> </div>
CSS部分
.pay-container{ width:7.5rem; height:8rem; background-color:#fbf9fb; position:fixed;z-index:999; overflow:hidden;display:none; }/* .pay-container-show{transform: translate3d(0, -8.9rem, 0);transition: 0.5s ease;transform: translate3d(0, 0, 0); transition: 0.5s ease;} */.pay-title{ height:0.96rem; line-height:0.96rem; border-bottom:1pxsolid#b3afaf; text-align:center; color:#070707;position:relative; font-size:0.36rem;}.pay-title.pay-title-remove{ width:0.24rem; height:0.24rem; position:absolute; top:0.35rem; left:0.33rem; line-height:0.28rem;font-size:0.45rem;}.pay-body{ padding-top:0.56rem;position:relative; height:7rem; box-sizing:border-box;}.pay-body.input-container{ width:6.74rem; height:0.93rem; border:1pxsolid#ebe8eb; overflow:hidden; border-radius:5px;background-color:#fff; margin:0auto; display:flex;flex-direction:row;align-items:center; flex-wrap:wrap; justify-content:center;align-content:center;}.pay-body.input-container.input-item{ width:1.1rem; height:0.92rem; display:inline-block; margin:0; border-right:1pxsolid#ebe8eb;text-align:center; line-height:0.92rem; border-radius:0; }.pay-body.input-container.input-item:nth-last-child(1){ border-right:0;}.pay-body.forgetPwd-container{width:6.74rem;margin:0.22remauto0; text-align:right;}.pay-body.forgetPwd-container.forgetPwd{ color:#52bfff; font-size:0.24rem; }.pay-body.key-container{ width:100%; height:4.56rem; position:absolute; bottom:0; display:flex;flex-direction:row;align-items:center; flex-wrap:wrap; justify-content:center;align-content:center; }.pay-body.key-container.key-item{ width:2.47rem; height:1.12rem; line-height:1.12rem; text-align:center; border-right:2pxsolid#f3f3f3; border-top:2pxsolid#f3f3f3; font-size:0.66rem; color:#1e1d1f;background-color:#fff;}.pay-body.key-container.key-item:nth-child(3),.pay-body.key-container.key-item:nth-child(6),.pay-body.key-container.key-item:nth-child(9),.pay-body.key-container.key-item:nth-child(12){ border-right:0;}.pay-body.key-container.key-item.remove,.pay-body.key-container.key-item.empty{ font-size:0.24rem;background-color:#e6e9f1;}.pay-body.key-container.key-item.remove{ background:url('../images/pay-remove.png') centerno-repeat#e6e9f1; background-size:.52rem.32rem; }.pay-body.key-container.selected{ background-color:#e4e8f4;}核心JS部分
var arr = []; var num =0; //響應鍵盤事件 $('.key-item').on('touchstart', function () { $(this).addClass('selected') }) $('.key-item').on('touchend', function () { $(this).removeClass('selected') }) $('.key-item').on('click', function () { var value =$(this).text(); var inputItem =$('.layui-m-layercont .input-item'); if (!$(this).hasClass('remove')) { if (num <6) { $(inputItem[num]).val(value); if (num ==5) { var arr = []; for (var i =0; i < inputItem.length; i++) { arr.push(inputItem[i].value) } arr =parseInt(arr.join('')); if (arr !==123456) { layer.open({ content:'支付密碼錯誤請重新輸入！', skin:'msg', time:2//2秒后自動關閉 }); } else { layer.open({ content:'輸入正確！', skin:'msg', time:2//2秒后自動關閉 }); } num++; returnfalse; } num++; } } else { if (num >0) { num--; $(inputItem[num]).val(''); } } })總結
以上所述是小編給大家介紹的jQuery仿移動端支付寶鍵盤的實現代碼，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對武林網網站的支持！
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