1. 判斷不包含某一字符串

/^((?!abc).)*$/.test(‘abc‘) //判斷是否包含abc 

2. 格式化金錢

function formatMoney(s){
        if(/[^0-9\.]/.test(s)) return "invalid value";
        s=s.replace(/^(\d*)$/,"$1.");
        s=(s+"00").replace(/(\d*\.\d\d)\d*/,"$1");
        s=s.replace(".",",");
        var re=/(\d)(\d{3},)/;
        while(re.test(s))
            s
 
=s.replace(re,"$1,$2");
        s=s.replace(/,(\d\d)$/,".$1");
        return "￥" + s.replace(/^\./,"0.")
    }

更簡單的方法詳見：js，正則實現金錢格式化

3. 校驗手機號

function isTelCode(str) {
    var reg= /^((0\d{2,3}-\d{7,8})|(1[3584]\d{9}))$/;
    return reg.test(str);
}

4. 校驗郵箱

function IsEmail(str) {
    var reg=/^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+$/;
    
 
return reg.test(str);
}

常用校驗正則表達式記錄