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POXMLHttpRequest object not being instantiated?
 

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  1. POXMLHttpRequest object not being instantiated?
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    <p>I'm new to Ajax and this has me stumped. It's relatively simple but trips up on the onclick handler with the first xhr.open(). Firebug says it's not a function, my guess is the XMLHttpRequest object isn't being created, but I'm not sure. Anyone have any ideas? </p> <p>Thanks in advance.</p> <pre><code>function init(){ function getXMLHTTP(){ var xhr = false; if (window.XMLHttpRequest) { xhr = new XMLHttpRequest(); } else if (window.ActiveXObject) { xhr = new ActiveXObject("Microsoft.XMLHTTP"); } return xhr; } function updatePage(theData){ $('results').innerHTML = theData; //TODO: pretty this up with mootools } var xhr = getXMLHTTP(); if (xhr) { xhr.onreadystatechange = function(){ if (xhr.readyState == 4) { if (xhr.status == 200) { var theData = xhr.responseText; updatePage(theData); } else{ alert("Error communicating to web service!"); } } } $('submit_btn').onclick = function(xhr){ if ($('state').value != "") { var theValue = $('state').value; xhr.open("GET", "/inc/calc.php?state="+theValue, true); //Ajax 101: 3rd argument marks object as asynchronous xhr.send(NULL); } else if ($('city').value != "") { xhr.open("GET", "/inc/calc.php?city="+$('city').value, true); xhr.send(NULL); } else if ($('county').value != "") { xhr.open("GET", "/inc/calc.php?county="+$('county').value, true); xhr.send(NULL); } else { //the form is empty, or just down payment is filled. returns whole freakin' table. xhr.open("GET", "/inc/calc.php", true); xhr.send(NULL); } } } </code></pre> <p>}</p>
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    1. This table or related slice is empty.
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    1. USTim Snyder
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. COare you sure you're not calling false.open() check the class of xhr in the firebug console.
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      1. USklochner
 

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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