When I write an example, two people answered.
I've just tried it, look at the example.
JS Method:
Copy Code code as follows:
<script type= "Text/javascript" >
Gets the true length of the string (two bytes converted to two single-byte)
function Getstractuallen (schars)
{
Schars.replace (/[^\x00-\xff]/g, "xx"). length/1024+ "Byte";
Math.Round (Schars.replace (/[^\x00-\xff]/g, "xx"). length/1024); this looks bad.
Return alert (Formatnum (Schars.replace (/[^\x00-\xff]/g, "xx"). length/1024,4));
}
Format decimals and rounded. such as: Formatnum (100.12345678,4)
function Formatnum (num1,num2) {
if (isNaN (NUM1) | | isNaN (Num2)) {
return (0);
}else{
Num1=num1.tostring ();
Num2=parseint (NUM2);
if (Num1.indexof ('. ') ==-1) {
return (NUM1);
}else{
var b=num1.substring (0,num1.indexof ('. ') +NUM2+1);
var c=num1.substring (Num1.indexof ('. ') +num2+1,num1.indexof ('. ') +NUM2+2);
if (c== "") {
return (b);
}else{
if (parseint (c) <5) {
return (b);
}else{
Return (Math.Round (parsefloat (b) *math.pow (10,num2)) +math.round (parsefloat (Math.pow). ToString (). SUBSTRING (0,math.pow (0.1,num2). toString (). IndexOf ('. ') +num2+1)) *math.pow (10,num2)))/math.pow (10,num2));
}
}
}
}
}
jquery Method:
Copy Code code as follows:
function Getstractuallen () {
var count=$ ("#sChars"). Val (). length/1024;
Return Math.Round (Count*math.pow (10,4));
}
jquery Intercept String length
jquery can use the text () method to get the string, and then length to determine how long, and then use the substring () method format truncated after the ' ... ' ellipsis.
Copy Code code as follows:
<! DOCTYPE HTML Public '-//w3c//dtd XHTML 1.0 transitional//en ' Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ' >
<meta http-equiv= ' content-type ' content= ' text/html; charset=gb2312 '/>
<title>cookie</title>
<script src= ' http://img.jb51.net/jslib/jquery/jquery-1.3.2.min.js ' type= ' Text/javascript ' ></script>
<style>
*{margin:0 padding:0;font-family: ' Arial ', Arial, Helvetica, Sans-serif;
#best {width:300px; height:200px; border:1px solid #ccc; margin:60px auto 0; line-height:1.6; font-size:14px X 0 0 10px}
. blank{font-size:18px; font-weight:bold text-align:center; padding:20px}
</style>
<script type= ' Text/javascript ' >
Jquery.fn.limit=function () {
var self = $ (' div[limit] ');
Self.each (function () {
var objstring = $ (this). text ();
var objlength = $ (this). Text (). length;
var num = $ (this). attr (' limit ');
if (Objlength > num) {
$ (this). attr (' title ', objstring);
Objstring = $ (this). Text (objstring.substring (0,num) + ' ... ');
}
})
}
$ (function () {
$ (document.body). limit ();
})
</script>
<body>
<div class= ' blank ' > Please press F5 to refresh the page .... </div>
<div id= ' best ' >
<div limit= ' ' > String string String Strings string character string string string string </div>
<div limit= ' > String string String Strings string string </div>
<div limit= ' > string string string String </div>
<div limit= ' ' > String string String Strings string literal string string </div>
<div limit= ' > String string String Strings string string </div>
</div>
</body>
