Posted in Javascript onMay 23, 2014
长度超出规定长度，显示省略号
设置class为displayPart，
设置自定义属，displayLength可显示长度（不包含...），双字节字符，长度 *2，
<script type="text/javascript">
$.fn.extend({
displayPart:function () {
var displayLength = 100;
displayLength = this.attr("displayLength") || displayLength;
var text = this.text();
if (!text) return ""; var result = "";
var count = 0;
for (var i = 0; i < displayLength; i++) {
var _char = text.charAt(i);
if (count >= displayLength) break;
if (/[^x00-xff]/.test(_char)) count++; //双字节字符，//[u4e00-u9fa5]中文
result += _char;
count++;
}
if (result.length < text.length) {
result += "...";
}
this.text(result);
}
});
$(function () {
$(".displayPart").displayPart();
});
</script> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title> New Document </title> <meta name="Generator" content="EditPlus"> <meta name="Author" content=""> <meta name="Keywords" content=""> <meta name="Description" content=""> <script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.min.js"></script> </head> <body> <h2>hello world</h2> <div style="width:500px;"> hello worldhello worldhello worldhello worldhello worldhello worldhello worldhello worldhello worldhello worldhello worldhello world!!! </div> <hr> <h2>hello</h2> <div class="displayPart" displayLength="40"> hello worldhello worldhello worldhello worldhello worldhello worldhello worldhello worldhelloworldhello worldhello worldhello worldhello worldhello worldhello world </div> </body> </html>
JQuery 控制内容长度超出规定长度显示省略号
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