wehub-resource-sync
128 lines
4.4 KiB
Go
128 lines
4.4 KiB
Go
/**
|
|
* md-toc.js v1.0.2
|
|
* https://github.com/yijian166/md-toc.js
|
|
*/
|
|
|
|
(function(window){
|
|
function Toc(id,options){
|
|
this.el = document.getElementById(id);
|
|
if(!this.el) return;
|
|
this.options = options || {};
|
|
this.tocLevel = parseInt(options.level) || 0;
|
|
this.tocClass = options['class'] || 'toc';
|
|
this.tocTop = parseInt(options.top) || 0;
|
|
this.elChilds = this.el.children;
|
|
if(!this.elChilds.length) return;
|
|
this._init();
|
|
}
|
|
|
|
Toc.prototype._init = function(){
|
|
this._collectTitleElements();
|
|
this._createTocContent();
|
|
this._showToc();
|
|
};
|
|
|
|
|
|
Toc.prototype._collectTitleElements = function() {
|
|
this._elTitlesNames = [],
|
|
this.elTitleElements = [];
|
|
for(var i=1;i<7;i++){
|
|
if(this.el.getElementsByTagName('h'+i).length){
|
|
this._elTitlesNames.push('h'+i);
|
|
}
|
|
}
|
|
|
|
this._elTitlesNames.length = this._elTitlesNames.length > this.tocLevel ? this.tocLevel : this._elTitlesNames.length;
|
|
|
|
for(var j=0;j < this.elChilds.length;j++){
|
|
this._elChildName = this.elChilds[j].tagName.toLowerCase();
|
|
if(this._elTitlesNames.toString().match( this._elChildName)){
|
|
this.elTitleElements.push(this.elChilds[j]);
|
|
}
|
|
}
|
|
};
|
|
|
|
Toc.prototype._createTocContent = function(){
|
|
this._elTitleElementsLen = this.elTitleElements.length;
|
|
if(!this._elTitleElementsLen) return;
|
|
this.tocContent = '';
|
|
this._tempLists = [];
|
|
|
|
for(var i=0;i< this._elTitleElementsLen;i++){
|
|
var j= i + 1;
|
|
this._elTitleElement = this.elTitleElements[i];
|
|
this._elTitleElementName = this._elTitleElement.tagName;
|
|
this._elTitleElementText = this._elTitleElement.innerHTML;
|
|
this._elTitleElement.setAttribute('id', 'tip' + i );
|
|
|
|
this.tocContent += '<li><a href="' + '#tip' + i + '" title="' + this._elTitleElement.innerText + '">'
|
|
+ this._elTitleElement.innerText + '</a>';
|
|
|
|
if(j != this._elTitleElementsLen){
|
|
this._elNextTitleElementName = this.elTitleElements[j].tagName;
|
|
if(this._elTitleElementName != this._elNextTitleElementName){
|
|
var checkColse = false, y = 1;
|
|
for(var t = this._tempLists.length - 1 ;t >= 0 ;t--) {
|
|
if ( this._tempLists[t].tagName == this._elNextTitleElementName){
|
|
checkColse = true;
|
|
break;
|
|
}
|
|
y++;
|
|
}
|
|
|
|
if(checkColse){
|
|
this.tocContent += new Array(y+1).join('</li></ul>');
|
|
this._tempLists.length = this._tempLists.length - y ;//更新栈的长度。
|
|
} else {
|
|
this._tempLists.push(this._elTitleElement);
|
|
this.tocContent += '<ul>';
|
|
}
|
|
|
|
|
|
}
|
|
else{
|
|
this.tocContent += '</li>';
|
|
}
|
|
}else{
|
|
if(this._tempLists.length){
|
|
this.tocContent += new Array(this._tempLists.length+1).join('</li></ul>');
|
|
}else{
|
|
this.tocContent += '</li>';
|
|
}
|
|
}
|
|
}
|
|
this.tocContent = '<ul>'+ this.tocContent + '</ul>';
|
|
};
|
|
|
|
Toc.prototype._showToc = function() {
|
|
|
|
this.toc = document.createElement('div');
|
|
this.toc.innerHTML = this.tocContent;
|
|
this.toc.setAttribute('class',this.tocClass);
|
|
if(! this.options.targetId){
|
|
// 没有传入目标id，追加到生成目录的div内
|
|
this.el.appendChild(this.toc);
|
|
}else{
|
|
//有传入目标id，直接在目标id内生成div
|
|
document.getElementById(this.options.targetId).appendChild(this.toc);
|
|
}
|
|
|
|
var self = this;
|
|
|
|
if(this.tocTop > -1){
|
|
window.onscroll = function(){
|
|
var t = document.documentElement.scrollTop || document.body.scrollTop;
|
|
if(t< self.tocTop){
|
|
self.toc.setAttribute('style','position:absolute;top:'+ self.tocTop +'px;');
|
|
}else{
|
|
self.toc.setAttribute('style','position:fixed;top:10px;');
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
window.Toc = Toc;
|
|
|
|
})(window); |