4 examples of 'javascript insertbefore' in JavaScript

47
function insertScript() {
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    window.urlfix_groupID = document.URL.replace(/^.+id=/,'').replace('#', '');
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    window.urlfix_groupSite = window.urlfix_grouplist[window.urlfix_groupID];
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    window.urlfix_openSuggBox = function(){var suggboxurl = "http://mufix.herokuapp.com/form?group=" + urlfix_groupID; if(urlfix_groupSite !== "undefined") suggboxurl += "&update=yes"; window.open(suggboxurl, '', 'scrollbars=no,resizable=yes, width=700,height=200,status=no,location=no,toolbar=no');};
51
    var urlfix_site = document.createElement('tr');
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    urlfix_site.innerHTML = '<td><u>Site</u><a href="#"> (Suggest an update)</a></td><td><a target="_blank" href="' + urlfix_groupSite + '"><u>' + urlfix_groupSite + '</u></a></td>';
53
    var urlfix_irc_par = document.getElementById("fixed_irc_url").parentNode;
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    urlfix_irc_par.parentNode.insertBefore(urlfix_site, urlfix_irc_par.nextSibling);
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}

7
function insertBeforeFirst()
8
{
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    var container = document.getElementById("container");
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    var child = document.createElement("div");
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    child.setAttribute("id", "child-before");
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    container.insertBefore(child, container.firstChild);
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}

12
export function insertBefore(parent, child, before) {
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  parent.insertBefore(child, before)
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}

252
insertBefore(index, ...items) {
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	// 数组范围之外
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	if(index < 0 || index >= this.length) return ;
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	// 当前节点 
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	let cur = this.at(index); 
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	items.forEach((item) => {
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		// 上一个节点
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		let prev = this.chain[cur.prev] || {index: -1}; 
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		// 下一个节点
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		let next = cur; 
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		// 插入新节点
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		cur = this.chain[this.FREE] = {
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			index: this.FREE, 
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			prev: prev.index, 
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			next: next.index, 
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			data: item
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		} 
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		next.prev = cur.index; 
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		// 上一个节点存在
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		if(prev.index !== -1) {
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			prev.next = cur.index; 
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		} 
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		// 插入的是头节点
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		else {
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			this.HEAD = cur.index; 
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		}
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		// 创建一个 FREE
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		this.calloc(); 
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		// 链表长度 +1
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		++this.length; 
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	})
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}