I want to add some data from url to an input-box with an unique name ( not id ) , Because I don't have any accesses on the page I can't edit it with ids or sth.
<input type="text" name="test"> and sth like that :
site.com/index.php?test=text123
Ok from what I understand, You want to put get data from URL into your input fields.
First, when you open the tab, put the 'document' of the tab into a global variable
var url = "www.url.com"; //the url of the page to open in tab var tabInstance= window.open(url); tabDocument = tabInstance.document; //tabDocument is a global variable Now, assuming the data you want to put into the tab is in the URL of the page that is opening the tab
function populateInputFields(){ var data = parseURLParams(document.URL); //get url data in json format. if(!data) return; //if no get parameters found //iterate json for(var key in data){//for each key in the json data var value = data[key]; //get the 'value' for corresponding key var element = tabDocument.getElementsByTagName(key)[0];//get the input element if(element && element.tagName == 'input'){//check if element exists and is of type input element.value = value; } } } Implementation of parseURLParams take from here: How to read GET data from a URL using JavaScript?
function parseURLParams(url) { var queryStart = url.indexOf("?") + 1, queryEnd = url.indexOf("#") + 1 || url.length + 1, query = url.slice(queryStart, queryEnd - 1), pairs = query.replace(/\+/g, " ").split("&"), parms = {}, i, n, v, nv; if (query === url || query === "") { return; } for (i = 0; i < pairs.length; i++) { nv = pairs[i].split("="); n = decodeURIComponent(nv[0]); v = decodeURIComponent(nv[1]); if (!parms.hasOwnProperty(n)) { parms[n] = []; } parms[n].push(nv.length === 2 ? v : null); } return parms; }