js 限制只能输入数字/字母
转载:http://www.cnblogs.com/elegance/p/4204720.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <script type="text/javascript" src="jquery-1.9.1.js"></script> <script type="text/javascript"> // ---------------------------------------------------------------------- // <summary> // 适用于IE // 限制只能输入数字 // demo: $(".onlyNum").onlyNum(); 限制使用了onlyNum类样式的控件只能输入数字 // </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 // demo: $(".onlyAlpha").onlyAlpha(); 限制使用了onlyNumAlpha类样式的控件只能输入数字和字母 // </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 // demo: $(".onlyNumAlpha").onlyNumAlpha(); 限制使用了onlyNumAlpha类样式的控件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; }); }; </script> </head> <body> First name: <input type="text" name="fname" id="onlyNum" /> <script> $("#onlyNum").onlyNum(); </script> </body> </html>
posted on 2015-06-13 13:28 TrustNature 阅读(305) 评论(0) 编辑 收藏 举报