3 examples of 'insertbefore js' in JavaScript

48
export function insertBeforeFirstScript (el: ASTNode, parent: ASTNode): void {
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    el.namespaceURI = parent.namespaceURI;
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    el.parentNode   = parent;
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    const firstScriptIndex = parent.childNodes.findIndex(node => node.tagName === 'script');
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    const elIndex          = firstScriptIndex !== -1 ? firstScriptIndex : parent.childNodes.length;
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    parent.childNodes.splice(elIndex, 0, el);
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}

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>';
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    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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}

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function insertScript(inline, data) {
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	var script = document.createElement('script');
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	script.setAttribute('id', '__lg_script');
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	if(inline)
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		script.appendChild(document.createTextNode(data));
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	else
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		script.setAttribute('src', data);
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	// FF: there is another variables in the scope named parent, this causes a very hard to catch bug
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	var _parent = document.head || document.body || document.documentElement;
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	var firstChild = (_parent.childNodes && (_parent.childNodes.length > 0)) ? _parent.childNodes[0] : null;
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	if(firstChild)
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		_parent.insertBefore(script, firstChild);
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	else
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		_parent.appendChild(script);
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}