本文轉自：http://blog.csdn.net/demod/article/details/78786168
<!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>Document</title>
<style>
body {
position: absolute;
left: 0;
right: 0;
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#uphone {
box-sizing: border-box;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
-ms-transform: translate(-50%, -50%);
-o-transform: translate(-50%, -50%);
-webkit-transform: translate(-50%, -50%);
-moz-transform: translate(-50%, -50%);
border: 2px solid #ddd;
width: 300px;
height: 40px;
border-radius: 10px;
outline: none;
padding-left: 15px;
font-size: 18px;
}
#uphone:focus {
border-left-color: #317EF3;
border-top-color: #FF3366;
border-bottom-color: #FF9800;
border-right-color: #09BB07;
}
</style>
</head>
<body>
<input id="uphone" type="tel" pattern="[0-9]*" maxlength="13" autocomplete="off" value="" placeholder="請輸入您的手機号" oncontextmenu="return false"
onpaste="return false" oncopy="return false" oncut="return false" />
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script>
$("#uphone").on("input propertychange", function () {
var uphone = $(this).val();
$(this).val(formatPhone(uphone));
moveEnd($(this)[0]);
});
function formatPhone(phone_num) {
var valueStr = phone_num.replace(/\D/g, "").substr(0, 11);
var len = valueStr.length;
if (len > 3 && len < 8) {
return valueStr.substr(0, 3) + " " + valueStr.substr(3);
} else if (len >= 8) {
return valueStr.substr(0, 3) + " " + valueStr.substr(3, 4) + " " + valueStr.substr(7);
}
return valueStr;
};
//在部分安卓機上input的光标會在添加空格後錯位，需要這個方法主動将光标放置在最後
function moveEnd(obj) {
//通過是否支援createTextRange判斷是否是IE
if (obj.createTextRange) {
var rg = obj.createTextRange();
rg.collapse(false);
rg.select();
} else {
setTimeout(function () {
var len = obj.value.length;
obj.setSelectionRange(len, len);
}, 20);
}
};
</script>
</body>
</html> 轉載于:https://www.cnblogs.com/ssda/p/8094789.html
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