<script>
//下面的正則表達式建議各位收藏哦，項目上有可能會用得着
$(
function
(){
$(
'#pass'
).blur(
function
(e) {
// alert('---------');
//密碼爲八位及以上而且字母數字特殊字符三項都包括
var
strongRegex =
new
RegExp(
"^(?=.{8,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*\\W).*$"
,
"g"
);
//密碼爲七位及以上而且字母、數字、特殊字符三項中有兩項，強度是中等
var
mediumRegex =
new
RegExp(
"^(?=.{7,})(((?=.*[A-Z])(?=.*[a-z]))|((?=.*[A-Z])(?=.*[0-9]))|((?=.*[a-z])(?=.*[0-9]))).*$"
,
"g"
);
var
enoughRegex =
new
RegExp(
"(?=.{6,}).*"
,
"g"
);
if
(
false
== enoughRegex.test($(
this
).val())) {
$(
'#passstrength'
).html(
'More Characters'
);
}
else
if
(strongRegex.test($(
this
).val())) {
$(
'#passstrength'
).className =
'ok'
;
$(
'#passstrength'
).html(
'Strong!'
);
}
else
if
(mediumRegex.test($(
this
).val())) {
$(
'#passstrength'
).className =
'alert'
;
$(
'#passstrength'
).html(
'Medium!'
);
}
else
{
$(
'#passstrength'
).className =
'error'
;
$(
'#passstrength'
).html(
'Weak!'
);
}
return
true
;
});
});
</script>
<input type=
"password"
name=
"pass"
id=
"pass"
/>
<span id=
"passstrength"
></span>
轉自：https://www.cnblogs.com/sjqq/p/6382287.html