javascript 常见功能实现(持续更新...)

$(document).on(‘keyup‘,‘#no‘,function(){
    var val = $.trim($(this).val());
    if(val == null || val == ‘‘)
        return;
    
    $(this).val(val.replace(/[^0-9a-z]+/ig,‘‘));    // 只能输入整数数字和字母
});

value=value.replace(/[^\w\.\/]/ig,‘‘)
value=value.replace(/[^\d|chun]/g,‘‘)
value=value.replace(/[^\w\.\/]/ig,‘‘)

function validate_email(myThis){
    var val = $.trim($(myThis).val());
    if(val == null || val == ""){
        $("#email_error").text("email不能为空");
        $(myThis).focus();
        return;
    }
        
    if(val != null && val != ""){
        if(!/^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/g.test(val)){
            $("#email_error").text("email格式错误");
            $(myThis).focus();
            return;
        }
    }
    $("#email_error").text("");
}

$(function(){
    var a = ‘testAbc，。、,./电饭锅123def‘; 
    b = a.replace(/[^0-9]+/ig,"");
    alert(b);
    b = a.replace(/[^a-z]+/ig,"");
    alert(b);
});

    var isFs = $(this).attr("datas");
    $.cookie("isFs",isFs,{ expires: 7 });