Implementation content: Truncate a piece of text containing HTML code, but there will be no problem that the containment tag is not closed.
php version address
The core part is as follows:
function Generate_Brief(text,length){
if(text.length < length) return text;
var Foremost = text.substr(0,length);
var re = /<(/?)
(BODY|SCRIPT|P|DIV|H1|H2|H3|H4|H5|H6|ADDRESS|PRE|TABLE|TR|TD|TH|INPUT|SELECT |TEXTAREA|OBJECT
|A|UL|OL|LI|BASE|META|LINK|HR|BR|PARAM|IMG|AREA|INPUT|SPAN)[^>]*(>?)/ig;
var Singlable = /BASE|META|LINK|HR|BR|PARAM|IMG|AREA|INPUT/i
var Stack = new Array(), posStack = new Array();
while(true){
var newone = re.exec(Foremost);
if(newone == null) break;
if(newone[1] == ""){
var Elem = newone[2];
if(Elem.match(Singlable) && newone[3]!= ""){
continue;
}
Stack.push(newone[2 ].toUpperCase());
posStack.push(newone.index);
if(newone[3] == "") break;
}else{
var StackTop = Stack[Stack.length-1];
var End = newone[2].toUpperCase();
if(StackTop == End){
Stack.pop();
posStack.pop ();
if(newone[3] == ""){
Foremost = Foremost ">";
}
}
};
}
var cutpos = posStack.shift();
Foremost = Foremost.substring(0,cutpos);
return Foremost;
}
Statement:The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn