There are situations when you want to select only dom elements which only have a specific content. jQuery provides a beautiful selector :contains:

$("a:contains(Pages)")
```But what if it isn't enough to just get all the elements which contain some word? Let's check what we get if we traverse all anchors on http://sv.wikipedia.org containing "wiki":

$(“a:contains(wiki)”).each(function(i) { console.log($(this).text()); });

[![](https://sharepointkunskap.files.wordpress.com/2012/02/jquery-contains-wiki.png "jquery-contains-wiki")](https://sharepointkunskap.files.wordpress.com/2012/02/jquery-contains-wiki.png) There is another, a generic way, to filter out elements, and it is called "filter". So a little regex check will do the trick.

$(“a”).filter(function() { return /look_for/i.test($(this).text()); }

[youtube http://www.youtube.com/watch?v=DnhGqcKEPiM&w=640&h=360] See an example what you can with it SharePoint, written by Thorsten Hans.

If you want to add some parameters to an url which you want to open, you can use jQuery.param function:

var url = "some\_url";
var params = { 
   name: "Setner",
   email: "setner@narspi.name",
   mobile: "123456789"
};
var search = "?" + $.param(p);
url += search;
```It is handy, indeed. In an environment without jQuery (are there some?:) ) you can just iterate an object and join properties:

var url = “some_url”; var params = { name: “Setner”, email: “setner@narspi.name”, mobile: “123456789” }; if (url.match("/\?/g") == null) { url += “?”; } else { url += “&”; } var search = “”; for(var p in params) { search += [p, params[p]].join("="); } url += search;

To save an excel sheet as a html table is very easy. Just select the needed area, then go to Save as and check the selection and choose html as output format. It works fine. It even looks like it did in Excel. But what if you don’t want all this junk, you want only the plain html table (e.g. for pasting into WP). When I saved my permission levels to html, I used this javascript code. First open the html page which Excel has created in Chrome, open the Dev Tools console, load the latest jQuery into the page, and remove all unnecessary attributes and styling, remove the comments, after that you can just copy the outerHTML of the table and paste into a text editor:

In one of my previous blogs I wrote about serializing of javascript objects. You can do it with JSON.stringify or Sys.Serialization.JavaScriptSerializer.serialize. Both methods work fine… almost. There is a big difference when it comes to datetime objects. MS treats dates a little bit different (like RegEx and much more). Let’s try this one:

var writer = { name: "Ajgi", birthdate: new Date(1934, 8-1, 21) };
var json = JSON.stringify(writer);
var msjson = Sys.Serialization.JavaScriptSerializer.serialize(writer);

What happens if we try to parse back msjson with JSON.parse: Well, the date isn’t a valid date anymore. How can we improve it. Rick Strahl gives a solution with custom functions for serializing and deserializing of ms date. But the thing is: we don’t need any custom functions for this, not if you run ASP.NET. The only thing we need is to use serialize and deserialize functions from Sys.Serialization.JavascriptSerializer namespace which you get automatically when you add ScriptManager in ASP.NET (and you get it even automagically in SharePoint). But what about $.ajax and functions I wrote about for retrieving list items and populating them, and updating list items with listdata.svc? Well, there comes the really nice tip from Rick Strahl: not to force $.ajax to parse the response. So instead of dataType: “json”, use the plain dataType: “text”. As the result we’ll get just a text, which we, of course, will deserialize with the native code for Microsoft:…. Use text when possible. When you define json as response format:

If some javascript code takes too much time to execute, you probably want to see what time your code or a part of the code takes to run. I found an idea in Dave Cranes Ajax in Action. The book is a little bit old and the code provided below has been changed and simplified:

var stopwatch = {};
stopwatch.watches = \[\];
stopwatch.getWatch = function(id, startNow) {
	var watch = stopwatch.watches\[id\];
	if (!watch) {
		watch = new stopwatch.StopWatch(id);
	}
	if (startNow) {
		watch.start();
	}
	return watch;
};
stopwatch.StopWatch = function (id) {
	this.id = id;
	stopwatch.watches\[id\] = this;
	this.events = \[\];
	this.total = 0;
	this.count = 0;
};
stopwatch.StopWatch.prototype.start = function() {
	this.current = new stopwatch.TimedEvent();
};
stopwatch.StopWatch.prototype.stop = function() {
	if (this.current) {
		this.current.stop();
		this.events.push(this.current);
		this.count++;
		this.total += this.current.duration;
		this.current = null;
	}
};
stopwatch.TimedEvent = function () {
	this.start = new Date();
	this.duration = 0;
};
stopwatch.TimedEvent.prototype.stop = function() {
	var stop = new Date();
	this.duration = stop - this.start;
};

There is a question in Stackoverflow and this one, too. There is a fine solution for jQuery. The only thing we need is window.location.search. Say we have http://domain.com?q=hello&a=good#home, then it takes only ?q=hello&a=good, and leaves #home and the main url. Anchors can be retrieved with hash. Here are all properties of window.location: Google Chrome provides a fine function: window.location.getParameter: I like the name of this function. So why not to use it or create this one if a browser doesn’t have it? Well here we go:

There are many ways to reload / refresh a page in javascript. One of them is as in discoveringsharepoint.wordpress.com describes:

window.location.reload()
```Today I found some tools which are shipped with ASP.NET/SharePoint to reload a page. The big advantage of them they are designed to work with SharePoint and take all possible aspects of page life cycle into account. The javascript function to refresh a page is just called, guess..: **RefreshPage** and it resides in init.js:

//init.js: function RefreshPageTo(evt, url, bForceSubmit) {ULSA13:; CoreInvoke(’_RefreshPageTo’, evt, url, bForceSubmit); }

Want to run some javascript code everywhere, but not in a modal dialog. Because errors are occured, or this code is unnecessary i dialogs. Well here is a solution I have found after some experiments:

$(document).ready(function() {
  if (!window.location.href.match(/isdlg=1/i)) {
    onDocumentReadyExceptItIsInDialog();
  }
});

function onDocumentReadyExceptItIsInDialog() {}
```This code checks with Regular Expressions if the url of the parent window contains IsDlg=1, if so nothing happens. In the usual case (not inside a dialog), the javascript code runs. EDIT: after I wrote this I actually found that this is the way SharePoint itself does: [![](https://sharepointkunskap.files.wordpress.com/2012/01/isdlg.png "isdlg")](https://sharepointkunskap.files.wordpress.com/2012/01/isdlg.png) So now I update the previous function to this:

$(document).ready(function() { if (window.location.search.match(/[?&]isdlg=1/i)) { return; } onDocumentReadyExceptItIsInDialog(); });

In one of my previous posts I showed a simple example how to retrieve data from a web service and render it with jQuery tmpl. To render this I used an id for a template and the container:

<script id="contactTemplate" type="text/html">
    <div>
        Name: {{= Name }} <br>
        Phone: {{= Phone }}
    </div>
</script>

<div id="contactContainer"></div>

To render we select the template and container with jQuery selectors:

function onSuccess(data) {
	$("#contactTemplate").tmpl(data.d.results).appendTo("#contactContainer");
}

On a page with multiple templates and containers it can be a djungle of different ids you have to track. Johan Leino in his great blog post provides a better and simpler way to organize containers and templates. The solution is to extend jQuery selectors (like :even, :odd and more) and introduce two new: :template and :container. This code comes from Johan Leino: