injecting data from URL to inputbox

Question

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

Answer 1

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;
}