密码强度应用(js)
<!-- 密码强度div --> <div id="tips" class="help-block"> <b class="fl">密码强度:</b><span></span><span></span><span></span> </div>
<script type="text/javascript">
$(function(){
//开始的时候隐藏
$('#tips').hide();
});
//验证密码强度
window.onload = function() {
//var oTips = document.getElementById("tips");
var oTips = $('#tips').get(0);
//var oInput = document.getElementsByTagName("input")[0];
var oInput = $('#password').get(0);
var aSpan = oTips.getElementsByTagName("span");
//var aSpan = $("#tips span");
//alert(aSpan);
var aStr = ["弱", "中", "强", "非常好"];
var i = 0;
oInput.onkeyup = oInput.onfocus = oInput.onblur = function() {
var index = checkStrong(this.value);
//this.className = index ? "correct" : "error";
oTips.className = "s" + index;
for ( i = 0; i < aSpan.length; i++)
aSpan[i].className = aSpan[i].innerHTML = "";
if(index==3){
index && (aSpan[index - 1].className = "active", aSpan[index - 1].innerHTML = aStr[index - 1]);
index && (aSpan[index - 2].className = "active", aSpan[index - 2].innerHTML = aStr[index - 2]);
index && (aSpan[index - 3].className = "active", aSpan[index - 3].innerHTML = aStr[index - 3]);
}else if(index==2){
index && (aSpan[index - 1].className = "active", aSpan[index - 1].innerHTML = aStr[index - 1]);
index && (aSpan[index - 2].className = "active", aSpan[index - 2].innerHTML = aStr[index - 2]);
}else if(index==1){
index && (aSpan[index - 1].className = "active", aSpan[index - 1].innerHTML = aStr[index - 1]);
}
if($('#tips').parent().parent().hasClass('error')){
$('#tips').hide();
}else if($('#password').val().length>=6){
$('#tips').show();
}
};
};
/** 强度规则
+ ------------------------------------------------------- +
1) 任何少于6个字符的组合,弱;任何字符数的同类字符组合,弱;
2) 任何字符数的两类字符组合,中;
3) 12位字符数以下的三类或四类字符组合,强;
4) 12位字符数以上的三类或四类字符组合,非常好。
+ ------------------------------------------------------- +
**/
//检测密码强度
function checkStrong(sValue) {
var modes = 0;
if (sValue.length < 6)
return modes;
//数字
if (/\d/.test(sValue))
modes++;
//字母
if(/[a-zA-Z]/.test(sValue))
modes++;
//特殊字符
if (/\W/.test(sValue))
modes++;
switch (modes) {
case 1:
return 1;
break;
case 2:
return 2;
break;
case 3:
return 3;
break;
}
}
</script>