html设置密码输入限制在十个字符

来源：互联网发布：tcp ip网络协议分析编辑：程序博客网时间：2024/04/30 10:05
<span class="span"><span id="stay" style="display: none">&nbsp;您还可以输入:<span id="txtCount"></span>个字符<br></span></span><input type="password"   id="password" name="password"><script language="JavaScript">    var lim=new limit();    lim.txtNote=document.getElementById("password");    lim.txtLimit=document.getElementById("txtCount");    lim.limitCount=10;    lim.init();    function limit(){        var txtNote;    //文本框        var txtLimit;   //提示字数的input        var limitCount; //限制的字数        var txtlength;  //到达限制时，字符串的长度        this.init=function(){            txtNote=this.txtNote;            txtLimit=this.txtLimit;            limitCount=this.limitCount;            txtNote.oninput=function(){wordsLimit()};txtNote.oninput=function(){wordsLimit()};            txtLimit.innerText=limitCount;        };        function wordsLimit(){            var noteCount=txtNote.value.length;            var InPut=document.getElementById("password").value.length;            if(InPut<10){                document.getElementById("stay").style.display="none";                return            }            if(InPut>=10){                document.getElementById("stay").style.display="inline";                document.getElementById("stay").style.color="green";            }            if(noteCount>limitCount){                txtNote.value=txtNote.value.substring(0,limitCount);                txtLimit.innerText=0;            }else{                txtLimit.innerText=limitCount-noteCount;            }            txtlength=txtNote.value.length;//记录每次输入后的长度        }    }</script>
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