javascript - Check if user input has certain characters -


hi i'm making "secure password" project school , need check if user input has "!@$%&#" , if have tell them password secure.

this project school im stuck doing :(

var password = document.getelementbyid('password');  var emsg = document.getelementbyid('feedback');  var minlength = 6;    function checkpass() {    if (password.value.length < minlength) {      emsg.innerhtml = 'password must have' + minlength + 'characters or more';    } else {      emsg.innerhtml = '';    }  }
<html>  <head>    <title> password secured </title>    <link rel="stylesheet" href="style.css">  </head>    <body>      <h1 class="logo"> logo</h1>      <br/>      <br/>      <p class="input">please type password: <br/> <input type="text" id="password" />        <div id="feedback"></div>      </p>      <br/>      <p class="answer"></p>      <br/>      <br/>      <p class="tips"> <br/>tips tips tips </p>    </body>  </html>

you can test string using regular expression:

function isvalid(str){  return !/[~`!#$%\^&*+=\-\[\]\\';,/{}|\\":<>\?]/g.test(str); }

possible duplicate of javascript code check special characters


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