//参数：对象
function gw_js_checkform_str_len(str){
var value=str
var length=value.length
if(length>0){
for(var i=0i<lengthi++){
var value_substr=value.substr(i,1)//截取字符串
var value_escape=escape(value_substr)//编码
if(value_escape.indexOf('%u')>-1){length++} //是否搜索到指定字符串
//if(value_escape.length>3){length++} //也可使用此语句替换上一条语句
}
}
return length
}
<html><head>
<title>table_td</title>
<style>
td{
border:1px solid black
border-collapse:collapse
width:60px
height:20px
}
table{
border:1px solid black
border-collapse:collapse
}
</style>
<script>
var limitLength = 2//限制多少个字数
function limitLen(){
var count = document.getElementsByTagName("td").length
for(var i = 0i<counti++){
var s = document.getElementsByTagName("td")[i].innerHTML
document.getElementsByTagName("td")[i].title = s
if(s.length>limitLength){
document.getElementsByTagName("td")[i].innerHTML = s.substring(0,limitLength)+"..."
}
else if(s.length < limitLength){
for(var c = s.lengthc<limitLength+3c++){//+3是因为后面三个...
s += " "
}
document.getElementsByTagName("td")[i].innerHTML = s
}
}
}
</script>
</head>
<body onLoad="limitLen()">
<table>
<tr>
<td>123dddddddddddd</td>
<td>345</td>
<td>测试测试测试测试测试1</td>
<td>345</td>
</tr>
<tr>
<td></td>
<td>空的</td>
<td>测试测试测试测试测试测试测试测试2</td>
<td>test</td>
</tr>
</table>
</body>
</html>
