在主题标题，添加预览内容功能
// ==UserScript==
// @name v2ex 帖子预览
// @namespace oneisall_v2ex
// @version 0.0.2
// @description 在主题标题，添加预览内容功能
// @author oneisall
// @require https://libs.baidu.com/jquery/1.7.2/jquery.min.js
// @match *://*.v2ex.com/*
// @grant GM_addStyle
// @license MIT
// ==/UserScript==
(function() {
'use strict';
function downloadCssAndAppend2Header(){
// https://cdn.liuzhicong.cn/backupjs/opentip-jquery.2.4.6.min.css
$.ajax({
type : "get",
url : "https://cdn.jsdelivr.net/npm/[email protected]/css/opentip.css",
async : false,
success : function(data){
appendCss2Header(data)
}
});
}
function appendCss2Header(cssText){
if (typeof GM_addStyle != "undefined") {
console.log("插入css方式","GM_addStyle")
GM_addStyle(cssText);
} else if (typeof PRO_addStyle != "undefined") {
console.log("插入css方式","PRO_addStyle")
PRO_addStyle(cssText);
} else if (typeof addStyle != "undefined") {
console.log("插入css方式","addStyle")
addStyle(cssText);
} else {
console.log("插入方式","head")
var node = document.createElement("style");
node.type = "text/css";
node.appendChild(document.createTextNode(cssText));
var heads = document.getElementsByTagName("head");
if (heads.length > 0) {
heads[0].appendChild(node);
} else {
document.documentElement.appendChild(node);
}
}
}
function downloadOpentipJsAndInitTip(){
// https://cdn.liuzhicong.cn/backupjs/opentip-jquery.2.4.6.min.js
$.ajax({
type : "get",
url : "https://cdn.jsdelivr.net/npm/[email protected]/downloads/opentip-jquery.min.js",
dataType:"script",
async : false,
success : function(data){
console.log("加载Opentip成功")
if(! Opentip ){
console.log("Opentip 加载后不存在")
}else{
initTip()
}
}
});
}
function initTip(){
$("a.topic-link").each(function(index,aTopicElement) {
var $aTopicElement=$(aTopicElement)
var href = $aTopicElement.attr("href");
var pattern = /\/t\/(\d+)#?/;
var arr = pattern.exec(href);
if (arr.length ===2) {
var id=arr[1]
$.ajax({
type : "get",
url : "https://www.v2ex.com/api/topics/show.json?id="+id,
dataType:"json",
success : function(data){
debugger
if($.isArray(data)){
$.each(data,function(i,e){
if((e['id']+"")===(id+"")){
var content=(e['content']||"")
/**if(content.length>500){
content=content.substr(0,500)+"......"
}*/
// 具体配置：http://www.opentip.org/documentation.html
new Opentip($aTopicElement,content,{group:"v2exTopic",escapeContent:true});
}
})
}else if($.isPlainObject(data)){
new Opentip($aTopicElement,"出错了："+JSON.stringify(data),{group:"v2exTopic"});
}else {
new Opentip($aTopicElement,"出错了，未知格式："+data,{group:"v2exTopic"});
}
}
})
}
});
}
function main(){
downloadCssAndAppend2Header();
downloadOpentipJsAndInitTip();
}
main();
})();