发布于 2017-07-11 09:36:38 | 151 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的Javascript教程，程序狗速度看过来！

JavaScript客户端脚本语言

Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。

---

<SCRIPT language=JavaScript>
<!--
function SymError()
{
  return true;
}
window.onerror = SymError;
//-->
</SCRIPT>

<SCRIPT language=JavaScript1.2>
function delnull()
{
    var str=document.getElementById('text').value;
    str=str.replace(/([\s]*\r\n[\s]*){2,}/gm,"\r\n");
    document.getElementById('text').value=str;
}
function refix()
{
    var str=document.getElementById('text').value;
    str=str.replace(/([\s]*\r\n[\s]*){2,}/gm,"\r\n\r\n");
    document.getElementById('text').value=str;
}
function url()
{
    var str=document.getElementById('text').value;
    str=str.replace(/^[ ]*(http:\/\/|^mms:\/\/|rtsp:\/\/|pnm:\/\/|ftp:\/\/|mmst:\/\/|mmsu:\/\/)([^\r\n]*)$/igm,"[url]$1$2[/url]");
    document.getElementById('text').value=str;
}

function addbr()
{
    var str=document.getElementById('text').value;
    str=str.replace(/\r\n/gm,"\r\n\r\n");
    document.getElementById('text').value=str;
}

function html_trans(str) {
    str = str.replace(/\r/g,"");
    str = str.replace(/on(load|click|dbclick|mouseover|mousedown|mouseup)="[^"]+"/ig,"");
    str = str.replace(/<script[^>]*?>([\w\W]*?)<\/script>/ig,"");
if(set.fontbash.checked)
{
    str = str.replace(/<span[^>]*?display\s*?:\s*?none[^>]*?>([\w\W]*?)<\/span>/ig,"");
    str = str.replace(/<span[^>]*?font\s*?-\s*?size\s*?:\s*(0px|0pt)[^>]*?>([\w\W]*?)<\/span>/ig,"");
    str = str.replace(/<font([^>]+)(0px|0pt)+([^>]*)>([\w\W]*?)<\/font>/ig,"");
}

if(set.filtrate.checked)
{
    str = str.replace(/[^<]*<([^>]*?)>[^<]*/ig,"<$1>");
    tm=window.textfield.value;
    if(tm.length<1){
        var arr;
        arr=str.match(/<img[^>]+src=[" ]?([^"]+)[" ]?[^>]*>/ig);
        tm=arr[0].replace(/<img[^>]+src=[" ]?([^"]+)[" ]?[^>]*>/ig,"$1")+"\"";
        i=tm.search(/\/[^\/]+"/ig);
        tm=tm.substr(0,i);
        window.textfield.value=tm+"/";
    }
    if(tm.substr(tm.length-1,1)!="/") tm+="/";
    var strtm="<img[^>]+src=[\"]?("+tm+"[^\"]+)[\"]?[^>]*>";
    var re = new RegExp(strtm,"ig");
    str = str.replace(re,"\n[img]$1[/img]\n");
}
else
{
    if(set.stext.checked) str = str.replace(/[^<]*<([^>]*?)>[^<]*/ig,"<$1>");

    if(!set.linka.checked) str = str.replace(/<a[^>]+href=[" ]?([^"]+)[" ]?[^>]*>(.*?)<\/a>/ig,"[url=$1]$2[/url]");
    if(!set.font_color.checked&&!set.stext.checked)
        str = str.replace(/<font([^>]+)color=([^ >]+)([^>]*)>(.*?)<\/font>/ig,"[color=$2]<font$1$3>$4</font>[/color]");
    if(!set.font_size.checked&&!set.stext.checked)
        str = str.replace(/<font([^>]+)size=([^ >]+)([^>]*)>(.*?)<\/font>/ig,"[size=$2]<font$1$3>$4</font>[/size]");
    if(!set.font_face.checked&&!set.stext.checked)
        str = str.replace(/<font[^>]+face=([^ >]+)[^>]*>(.*?)<\/font>/ig,"[font=$1]$2[/font]");
    if(!set.img.checked) str = str.replace(/<img[^>]+src=[" ]?([^"]+)[" ]?[^>]*>/ig,"\n[img]$1[/img]\n");

    if(!set.odj.checked){
        //return str;
        str = str.replace(/<object[^>]*?6BF52A52\-394A\-11d3\-B153\-00C04F79FAA6[^>]*?>.*<param[^>]+name\s*=\s*["](url|src)["][^>]+value=[" ]?([^"]+)[" ][^>]*>.*<\/object>/ig,"\n\n"); 
        str = str.replace(/<object[^>]*?D27CDB6E\-AE6D\-11cf\-96B8\-444553540000[^>]*?>.*<param[^>]+name\s*=\s*["](url|src)["][^>]+value=[" ]?([^"]+)[" ][^>]*>.*<\/object>/ig,"\n\n");
        str = str.replace(/<embed[^>]*type=["]?application\/x\-shockwave\-flash["]?[^>]*src=[" ]?([^"|^ ]+)[" ]?[^>]*>/ig,"\n\n");
        str = str.replace(/<embed[^>]*src=["]?([^"|^ ]+)["]?[^>]*type=["]?application\/x\-shockwave\-flash["]?[^>]*>/ig,"\n\n");
        str = str.replace(/<object[^>]*?CFCDAA03\-8BE4\-11cf\-B84B\-0020AFBBCCFA[^>]*?>.*<param[^>]+name\s*=\s*["](url|src)["][^>]+value=[" ]?([^"]+)[" ][^>]*>.*<\/object>/ig,"\n\n"); 
        }
    if(!set.font_b.checked&&!set.stext.checked){
        str = str.replace(/<([\/]?)b>/ig,"[$1b]");
        str = str.replace(/<([\/]?)strong>/ig,"[$1b]");}
    if(!set.font_u.checked&&!set.stext.checked)
        str = str.replace(/<([\/]?)u>/ig,"[$1u]");
    if(!set.font_i.checked&&!set.stext.checked)
        str = str.replace(/<([\/]?)i>/ig,"[$1i]");

    str = str.replace(/ /g," ");
    str = str.replace(/&/g,"&");
    str = str.replace(/"/g,"\"");
    str = str.replace(/</g,"<");
    str = str.replace(/>/g,">");
}
    str = str.replace(/<br>/ig,"\n");
    str = str.replace(/<p[^>]*?>/ig,"\n\n");
    str = str.replace(/<[^>]*?>/g,"");
    str = str.replace(/\[url=([^\]]+)\]\n(\[img\]\1\[\/img\])\n\[\/url\]/g,"$2");
    str = str.replace(/\n+/g,"\n");

    return str;
}
function copycode(obj){
obj.select();
objcopy=obj.createTextRange();
objcopy.execCommand("Copy");
}
function trans(){
    var str = "";
    rtf.focus();
    rtf.document.body.innerHTML = "";
    rtf.document.execCommand("paste");
    str = rtf.document.body.innerHTML;
    if(str.length == 0) {
        alert("剪贴版不存在超文本数据！");
        return "";
    }
    return html_trans(str);
}
function preview(){
var prewin=window.open("","","");
prewin.document.write(rtf.document.body.innerHTML);
}
function zhen(str)
{
    strfound=str.replace(/\\/ig,"\\\\");
    strfound=strfound.replace(/\[/ig,"\\[");
    strfound=strfound.replace(/\]/ig,"\\]");
    strfound=strfound.replace(/\{/ig,"\\{");
    strfound=strfound.replace(/\}/ig,"\\}");
    strfound=strfound.replace(/\|/ig,"\\|");
    strfound=strfound.replace(/\//ig,"\\/");
    strfound=strfound.replace(/\^/ig,"\\^");
    strfound=strfound.replace(/\./ig,"\\.");
    strfound=strfound.replace(/\*/ig,"\\*");
    strfound=strfound.replace(/\?/ig,"\\?");
    strfound=strfound.replace(/\+/ig,"\\+");
    return strfound;
}
function replace_star()
{
    var str=document.getElementById('text').value;
    if(!reg.checked)
        strfound=zhen(find_text.value);
    else
        strfound=find_text.value;
    var re = new RegExp(strfound,"ig");
    str=str.replace(re,replace_text.value);
    document.getElementById('text').value=str;
}
</SCRIPT>