用Jquery控制文本框只能输入数字和字母

来源：互联网发布：淘宝网怎么刷单挣钱编辑：程序博客网时间：2024/05/10 14:24
// ----------------------------------------------------------------------// <summary>// 限制只能输入数字// </summary>// ----------------------------------------------------------------------$.fn.onlyNum = function () {    $(this).keypress(function (event) {        var eventObj = event || e;        var keyCode = eventObj.keyCode || eventObj.which;        if ((keyCode >= 48 && keyCode <= 57))            return true;        else            return false;    }).focus(function () {    //禁用输入法        this.style.imeMode = 'disabled';    }).bind("paste", function () {    //获取剪切板的内容        var clipboard = window.clipboardData.getData("Text");        if (/^\d+$/.test(clipboard))            return true;        else            return false;    });};// ----------------------------------------------------------------------// <summary>// 限制只能输入字母// </summary>// ----------------------------------------------------------------------$.fn.onlyAlpha = function () {    $(this).keypress(function (event) {        var eventObj = event || e;        var keyCode = eventObj.keyCode || eventObj.which;        if ((keyCode >= 65 && keyCode <= 90) || (keyCode >= 97 && keyCode <= 122))            return true;        else            return false;    }).focus(function () {        this.style.imeMode = 'disabled';    }).bind("paste", function () {        var clipboard = window.clipboardData.getData("Text");        if (/^[a-zA-Z]+$/.test(clipboard))            return true;        else            return false;    });};// ----------------------------------------------------------------------// <summary>// 限制只能输入数字和字母// </summary>// ----------------------------------------------------------------------$.fn.onlyNumAlpha = function () {    $(this).keypress(function (event) {        var eventObj = event || e;        var keyCode = eventObj.keyCode || eventObj.which;        if ((keyCode >= 48 && keyCode <= 57) || (keyCode >= 65 && keyCode <= 90) || (keyCode >= 97 && keyCode <= 122))            return true;        else            return false;    }).focus(function () {        this.style.imeMode = 'disabled';    }).bind("paste", function () {        var clipboard = window.clipboardData.getData("Text");        if (/^(\d|[a-zA-Z])+$/.test(clipboard))            return true;        else            return false;    });};$(function () {    // 限制使用了onlyNum类样式的控件只能输入数字    $(".onlyNum").onlyNum();    //限制使用了onlyAlpha类样式的控件只能输入字母    $(".onlyAlpha").onlyAlpha();    // 限制使用了onlyNumAlpha类样式的控件只能输入数字和字母    $(".onlyNumAlpha").onlyNumAlpha();});      <ul>        <li>只能输入数字：<input type="text" class="onlyNum" /></li>        <li>只能输入字母：<input type="text" class="onlyAlpha" /></li>        <li>只能输入数字和字母：<input type="text" class="onlyNumAlpha" /></li></ul>
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