I have been working on a pass project recently. When entering a password in the registration module, the password strength (low, medium, high) needs to be displayed. Today I will share with you the results. The code is not as complicated as the online search and can meet general needs.
html code is as follows:
< !DOCTYPE HTML>
Password Strength< ;/title> <br><style type="text/css"> <br>#passStrength{height:6px;width:120px;border:1px solid #ccc;padding:2px;} <br>.strengthLv1 {background:red;height:6px;width:40px;} <br>.strengthLv2{background:orange;height:6px;width:80px;} <br>.strengthLv3{background:green;height:6px;width:120px ;} <br></style> <br></head> <br><body> <br><input type="password" name="pass" id="pass" maxlength="16 "/> <br><div class="pass-wrap"> <br><em>Password strength: </em> <br><div id="passStrength"></ div> <br></div> <br></body> <br></html> <br><script type="text/javascript" src="js/passwordStrength.js"> </script> <br><script type="text/javascript"> <br>new PasswordStrength('pass','passStrength'); <br></script> <br>
</div> <br>js code is as follows: <br><div class="codetitle">
<span><a style="CURSOR: pointer" data="43871" class="copybut" id="copybut43871" onclick="doCopy('code43871')"><u>Copy code </u></a></span> Code is as follows: </div>
<div class="codebody" id="code43871"> <br>function PasswordStrength(passwordID,strengthID ){ <br>this.init(strengthID); <br>var _this = this; <br>document.getElementById(passwordID).onkeyup = function(){ <br>_this.checkStrength(this.value); <br>} <br>}; <br>PasswordStrength.prototype.init = function(strengthID){ <br>var id = document.getElementById(strengthID); <br>var div = document.createElement('div'); <br>var strong = document.createElement('strong'); <br>this.oStrength = id.appendChild(div); <br>this.oStrengthTxt = id.parentNode.appendChild(strong); <br>}; <br>PasswordStrength.prototype.checkStrength = function (val){ <br>var aLvTxt = ['','low','medium','high']; <br>var lv = 0; <br>if(val .match(/[a-z]/g)){lv ;} <br>if(val.match(/[0-9]/g)){lv ;} <br>if(val.match(/(. [^a-z0-9])/g)){lv ;} <br>if(val.length < 6){lv=0;} <BR>if(lv > 3){lv=3; } <br>this.oStrength.className = 'strengthLv' lv; <br>this.oStrengthTxt.innerHTML = aLvTxt[lv]; <br>}; <br>
</div> <br>Rendering: <br><img src="/static/imghw/default1.png" data-src="http://files.jb51.net/file_images/article/201406/20140605172346.png?201455172425" class="lazy" alt="js test password strength (low, medium and high) with pictures_javascript skills" > <br>Instructions for use: <br><br>1. The first parameter of the object is the id of the password input box, and the second parameter is the id of the password strength bar. <br><br>2. The password strength rules can be customized in the checkStrength method. <br><br>3. Password strength displays low, medium and high corresponding to 3 css styles (strengthLv1, strengthLv2, strengthLv3). </div>
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