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return value nested in function
[3Replies]
- 05-Jan-2013 10:29 PM
- Forum: Using jQuery
Dear collective wisdom,
Disregarding the API calls to sqlite in the following code, I want to reference selectLocation as a variable that returns the JSON object for later manipulation. I realize I cannot return this within the nested db.transaction closure, which is why I used the variable jsonOut to grab the object after it was assembled. The call to console.log("In:" + JSON.stringify(json)) writes out the expected value, but unfortunately, when I try assigning selectLocation to a variable, I get that it is undefined. Am I barking up the wrong tree to get my object?

var selectLocation = function () {

var SelectStatement = 'SELECT * FROM site s '
+ 'INNER JOIN evaluation e ON s.site_id = e.site_id '
+ 'ORDER BY s.site_id ';

db.transaction(function (transaction) {
transaction.executeSql(SelectStatement, [], function (transaction, result) {
if (result !== null && result.rows !== null) {
var i = 0,
max,
row,
location,
complete,
notExists,
category,
jsonToEvaluate = []; // initialize as a collection

for (i = 0, max = result.rows.length; i < max; i += 1) {
row = result.rows.item(i);
location = row.address
+ ' ' + row.city
+ ' ' + row.state
+ ' ' + row.zip;
complete = row.date_entered_on_device_by_evaluator;
notExists = row.no_longer_exists;

if (complete || notExists) {
category = "evaluationComplete";
} else {
category = "evaluationNotComplete";
}

jsonToEvaluate[i] = {
id: row.evaluation_id,
category: category,
location: location
};

if (i + 1 === max) {
jsonOut(jsonToEvaluate);
//alert(JSON.stringify(jsonToEvaluate));
//return jsonToEvaluate;
}

}
}
}, errorHandler);
}, errorHandler, nullHandler);
return;
}

// return json object
function jsonOut (json) {

console.log("In:" + json);
return json;

}

// test underscore template

var test = selectLocation();
console.log("Out:" + test);

Thanks in advance!

Greg--

Sample backbone.js, require.js apps
[1Reply]
- 16-Dec-2012 10:51 PM
- Forum: jQuery Mobile
Dear all,
I want to see how the models are defined for the sample app at http://jquerymobile.com/test/docs/pages/backbone-require.html ... where can I find the source code for this? Also, besides https://github.com/jquery/jquery-mobile/pull/5205, does anyone know of any other good examples out there of a JQM/Backbone app? I am about to embark on rewriting my project from JQM/Phonegap into a JQM/Phonegap/Backbone/Require app and want as many sample apps to examine in gory detail before i embark on my journey.

Thanks in advance!

Greg--

Problem with form reset
[2Replies]
- 11-Jul-2012 10:41 PM
- Forum: jQuery Mobile
Hey all,
I am trying to do a form reset, but am unable to get it working.  I think I may have the answer: My form is split into multiple pages using page divs ... nothing seems to work to clear all form elements across all defined "pages." I played around with this a bit in jsfiddle, but it doesn't seem to render going between page divs too well. Anyway, I tried it within a single page div and it worked fine. Here is a snippet of my HTML:

<form id="test">
<div data-role="page" id="main">
<input type="text"/>
<input type="text"/>

<a href="#ratingsFeatures" data-role="button" data-inline="true" data-theme="b" value="submit-value">Which Features?</a>

<button id="res">reset now</button>
</div>

<div data-role="page" id="ratingsFeatures">
<div data-role="fieldcontain">
<span>blah blah blah</span><input type="checkbox"/>
</div>
<a href="#main" data-role="button" data-inline="true" data-theme="b" value="submit-value">Return to main?</a>

</div>
</form>

<br><br>

And here is the function I used:
$(function() {
$('#res').bind('click', function() {
$('#test')[0].reset();
});
});

Beyond putting reset buttons on each page div (which would annoy and confuse my users no end), what other options are there to get this working?

Thanks very much in advance!

Greg--

code to clear a fom
[11Replies]
- 10-Jul-2012 10:50 PM
- Forum: Using jQuery
Am using the following code from: http://www.electrictoolbox.com/jquery-clear-form/

function clear_form_elements(ele) {

$(ele).find(':input').each(function() {
switch(this.type) {
case 'password':
case 'select-multiple':
case 'select-one':
case 'text':
case 'textarea':
$(this).val('');
break;
case 'checkbox':
case 'radio':
this.checked = false;
}
});

}

With the following button:

<input onclick="clear_form_elements(this.form)" type="button" value="Clear All" />

But, it does not do anything in my form (in particular, clear checkboxes and set multiple-selects to the blank value). I have even changed the form tag to a simple <form>.

Any ideas as to what boneheaded thing I have overlooked in implementing this code into my app?

Thanks very much in advance!

Greg--

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