1. 程式人生 > 程式設計 >js實現表單校驗功能

js實現表單校驗功能

本文例項為大家分享了實現表單校驗功能的具體程式碼,供大家參考,具體內容如下

1、所用到的三個事件:

onfocus(焦點聚焦事件)、onblur(焦點離開事件)、onkeyup(按鍵抬起的事件)

2、利用事件觸發函式,函式中執行校驗的資訊。

3、利用checkform判斷表單中的內容是否規範,如果規範submit按鈕可以提交表單資訊。

簡單效果:

js實現表單校驗功能

js實現表單校驗功能

js實現表單校驗功能

js實現表單校驗功能

form中的程式碼:

<form action="demo.html" onsubmit="return checkForm()">
      <div>
      <div class="text">
           <p>使用者名稱</p>
           <input id="value" onfocus="shoeTips('hint','使用者名稱長度不能小於六')" onblur="hint_hide()" onkeyup="hint()" type="text" Name="Userame" http://www.cppcns.com
placeholder="使用者名稱" /> <span id="hint"></span> </div> <div class="text"> <p>密碼</p> <input id="pass_value" onfocus="shoeTips('pass_hint','密碼長度不能小於六')" onblur="pass_hide()" onkeyup="checkPass()" type="password" name="password" placeholder="密碼" /> <span id="pass_hint"></span> </div> <div class="text"> <p>確認密碼</p> <input id="passpass_value" onfocus="shoeTips('passpass_hint','兩次密碼要一致')" onblur="passpass_hide()" onkeyup="checkPassPass()" type="password" name="password" placeholder="確認密碼" /> <span id="passpass_hint"></span> </div> <div clas
s="text"> <p>郵箱</p> <input id="email" onfocus="shoeTips('email_hint','郵箱格式要正確')" onblur="emailHide()" onkeyup="emailCheck()" type="email" name="email" placeholder="郵箱" /> <span id="email_hint"></span> </div> <div class="text"> <p>手機號</p> <input id="phone" type="text" onfocus="shoeTips('phone_hint','格式為十一位數字的手機號')" onblur="phoneHide()" onkeyup="phoneCheck()" Name="Phone" placeholder="手機號"> <span id="phone_hint"></span> </div> <div class="submit"> <input type="submit" value="提交" /> </div> </div> </form>

js中的:

function shoeTips(spanId,tips) {
 var span = document.getElementById(spanId);
 span.innerHTML = tips;
}
/**
 * 校驗使用者名稱
 */
function hint() {
 var value = document.getElementById("value").value;
 var hint = document.getElementById("hint");
 if(value.length < 6) {
  hint.innerHTML = "使用者名稱太短";
  return false;
 } else {
  hint.innerHTML = "使用者名稱合格";
  return true;
 }
}
 
function hint_hide() {
 var hint = document.getElementById("hint");
 hint.innerHTML = "";
}
/**
 * 校驗密碼
 */
 
function checkPass() {
 vIdpIbar value = document.getElementById("pass_value").value;
 var hint = document.getElementById("pass_hint");
 if(value.length < 6) {
  hint.innerHTML = "密碼太短";
  return false;
 } else {
  hint.innerHTML = "密碼格式合格";
  return true;
 }
}
 
function pass_hide() {
 var hint = document.getElementById("pass_hint");
 hint.innerHTML = "";
}
/***
 * 確認密碼的校驗
 */
function checkPassPass() {
 var papavalue = document.getElementById("passpass_value").value;
 var value = document.getElementById("pass_value").value;
 var papahint = document.getElementById("passpass_hint");
 if(papavalue != value) {
  papahint.innerHTML = "兩次密碼不一致";
  return false;
 } else {
  papahint.innerHTML = "";
  return true;
 }
}
 
function passpass_hide() {
 var papahint = document.getElementById("passpass_hint");
 papahint.innerHTML = "";
}
/**
 * 校驗郵箱
 */
function checkEmail(strEmail) 
{      
    var emailReg = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
    if ( emailReg.test(strEmail) ) {
        return true;
    }
    else {
//      alert("您輸入的Email地址格式不正確!");
        return false;
    }
};
function emailCheck() {
 var emailValue = document.getElementById("email").value;
 var email_hint = documentIdpIb.getElementById("email_hint");
 var flag = checkEmail(emailValue);
 if(flag) {
  email_hint.innerHTML = "郵箱格式正確";
  return true;
 } else {
  email_hint.innerHTML = "郵箱格式錯誤";
  return false;
 }
}
 
function emailHide() {
 var email_hint = document.getElementById("email_hint");
 email_hint.innerHTML = "";
}
/**
 * 校驗手機號
 */
function checkMobile( strMobile )
{ //13588888888
    var regu = /^[1][345678][0-9]{9}$/;
    var re = new RegExp(regu);
    if (re.test(strMobile)) {
        return true;
    }
    else http://www.cppcns.com{
        return false;
    }
};
function phoneCheck() {
 var phone = document.getElementById("phone").value;
 var phone_hint = document.getElementById("phone_hint");
 var flag = checkMobile(phone);
 if(flag) {
  phone_hint.innerHTML = "手機號格式正確";
  return true;
 } else {
  phone_hint.innerHTML = "手機號格式錯誤";
  return false;
 }
}
 
function phoneHide() {
 var phone_hint = document.getElementById("phone_hint");
 phone_hint.innerHTML = "";
}
 
function checkForm() {
 var flag = emailCheck() && checkPass() && checkPassPass() && hint() && phoneCheck();
 return flag;
}

以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。