Question

我正在尝试动态选择输入文本区域并用空格或逗号分隔的所有有效电子邮件。（我不确定如何使用正则表达式在javascript中实现这一点。）

我的主要问题是一些误报和正在显示的额外重复信息（我假设使用的是keyup），有没有办法解决这个问题所以它只显示每个有效的电子邮件一次？

$(document).ready(function(){ 
$('.emails').keyup(function () {
    var matches = $('.emails').val().split(' ');
    for (var i = 0; i < matches.length; i++){
        if (validEmail(matches[i])){
            $('#emails-send').append("<div class='newmail'>" + matches[i] + "</div>");
        }
    }
});

function validEmail(emailAddress) {
    var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
    return pattern.test(emailAddress);
};

});

Answer 1

您可以将结果存储在另一个对象中，并检查它们是否已经像这样添加：http://jsfiddle.net/LKPwg/2/

这也使用超时来防止添加不完整的电子邮件地址。

var results = {};
var timer = null;

$(document).ready(function() {
    $('.emails').keyup(function() {
        clearTimeout(timer);
        timer = setTimeout("parseEmails()", 500);
    });
});

function parseEmails() {
    var matches = $('.emails').val().split(' ');
    for (var i = 0; i < matches.length; i++) {
        if (validEmail(matches[i])) {
            if (results[matches[i]] == undefined) {
                results[matches[i]] = matches[i];
                $('#emails-send').append("<div class='newmail'>" + matches[i] + "</div>");
            }

        }
    }
}

function validEmail(emailAddress) {
    var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
    return pattern.test(emailAddress);
};

对于逗号/空白分隔，您可以先用空格替换逗号：

$('.emails').val().replace(',', ' ').split(' ')

<强>更新

http://jsfiddle.net/LKPwg/4/

检查重复项的替代方法，通过在结果中搜索找到的标记的子字符串，并在这种情况下更新result-div：（此示例不需要超时并使用data-attribute来标识结果）

var substr = matches[i].substr(0, (matches[i].length - 1));
if (results[substr]) {
  delete results[substr];
  $('#emails-send .newmail[data-email="' + substr + '"]').html(matches[i]).attr('data-email', matches[i]);
}
else {
  $('#emails-send').append("<div class='newmail' data-email=" + matches[i] + ">" + matches[i] + "</div>");
}

jQuery从文本区域中选择所有电子邮件

1 个答案: