dom-traversal

I'd like to take the code found here: http://www.jslab.dk/articles/non.recursive.preorder.traversal.part2 // HTML element var root = document.documentElement; recursivePreorder(root); // Recusively find and handle all text nodes function recursivePreorder(node) { // If node is a text node if (node.type == 3) { // Do something with node } // else recurse for each child node else { for(var i=0; i<node.childNodes.length; i++) recursivePreorder(node.childNodes[i]); } } and convert it into clean jQuery. Any idea? I know recursion requires argument.callee since the callbacks in jQuery are anonymous,

You can get the nodes of the document object of an <iframe> with the contentDocument property of the HTMLIFrameElement But I can't find a way getting the <iframe> back out of the node. Is the relation between the <iframe> and it's document is only one way? If it does, WHY? A non working DEMO: var iframe = document.getElementById('iframe'); var doc = iframe.contentDocument || iframe.contentWindow.document; var div = doc.getElementsByTagName('div')[0]; console.log('Did we find the iframe? ' + ($(div).closest('iframe').length > 0));​ // Output: "Did we find the iframe? false" The iframe element

<div id="widgetAreaFooter"> <div class="row">1</div> <div class="row">2</div> <div class="row">3</div> <div class="row">4</div> <div class="row">5</div> <div class="row">6</div> <div class="row">7</div> </div> How to remove the 3 last div ? I tryed this but it doesn't work :/ var row = $( '#widgetAreaFooter>.row' ); var nbr = row.length ; for ( var i=4;i<nbr;i++ ) row.get(i).remove(); or for ( var i=4;i<nbr;i++ ) row[i].remove(); This will remove the last three elements: $('#widgetAreaFooter > .row').slice(-3).remove(); jsFiddle Demo You can get a part of a jQuery collection using .slice() .

I am trying to find a <td> where the value is 5. It is a calender so there will only be one 5 value. You can use filter method: $('td').filter(function(){ return $(this).text() === '5' }) Use the :contains selector: var td = $("td:contains('5')"); Edit: This will also select the td with 15 and 25 , if you want exact 5 , then use the .filter method as the other answer said. 来源： https://stackoverflow.com/questions/12746846/jquery-find-table-cell-where-value-is-x

How can I iterate through all forms in a document using javascript? The code below will go through an html document, get all forms and do a pop-up alert of the names of each form. var formsCollection = document.getElementsByTagName("form"); for(var i=0;i<formsCollection.length;i++) { alert(formsCollection[i].name); } This is just a start to see if you are getting the reult you require. Thereafter, remove the alert and continue to do what you need to. rahul You can use document.forms collection See forms Collection Here's an example using the document.forms instead of getElementsByTagName(). As

What's the difference between these? Is one more efficient than the other? I'm a little bit confused to why they both exist. Say I have this markup: <table> <tr> <td>...</td> <td><span class='toggle'>Toggle</span></td> </tr> <tr> <td>...</td> <td><span class='toggle'>Toggle</span></td> </tr> <tr> <td>..</td> <td><span class='toggle'>Toggle</span></td> </tr> </table> From the <span> tags I could use either $(this).closest('tr'); or $(this).parents('tr'); to access the parent/closest <tr> tag. parent returns the immediate parents (one for each element in the caller object) or nothing if the

I have a series of rows with columns and I want to select the value of an input field that is in a previous column to the input field (price input) that I am calling a function on when a key is released. I have tried: quantity = $(this).parent().parent().children().val() ; quantity = $(this).parent().parent().children().closest('.inputQty', this).val() ; But neither work. An example of the DOM: <div class="row"> <div class="column"><input class="inputQty" id="quantity0" /></div> <div class="column"><input class="someOther" id="Other0" /></div> <div class="column"> <div class="cSelect"> <select