I have a problem to manipulate checkbox values. The ‘change’ event on checkboxes returns an object, in my case:
{"val1":"member","val2":"book","val3":"journal","val4":"new_member","val5":"cds"}
The above object needed to be transformed in order the search engine to consume it like:
{ member,book,journal,new_member,cds}
I have done that with the below code block:
var formcheckbox = this.getFormcheckbox();
formcheckbox.on('change', function(checkbox, value){
var arr=[];
for (var i in value) {
arr.push(value[i])
};
var wrd = new Array(arr);
var joinwrd = wrd.join(",");
var filter = '{' + joinwrd + '}';
//console.log(filter);
//Ext.Msg.alert('Output', '{' + joinwrd + '}');
});
The problem is that I want to the “change” event’s output (“var filter” that is producing the: { member,book,journal,new_member,cds}) to use it elsewhere. I tried to make the whole event a variable (var output = “the change event”) but it doesn’t work.
Maybe it is a silly question but I am a newbie and I need a little help.
Thank you in advance,
Tom
Just pass filter to the function that will use it. You'd have to call it from inside the change handler anyway if you wanted something to happen:
formcheckbox.on('change', function(cb, value){
//...
var filter = "{" + arr.join(",") + "}";
useFilter(filter);
});
function useFilter(filter){
// use the `filter` var here
}
You could make filter a global variable and use it where ever you need it.
// global variable for the search filter
var filter = null;
var formcheckbox = this.getFormcheckbox();
formcheckbox.on('change', function(checkbox, value){
var arr = [],
i,
max;
// the order of the keys isn't guaranteed to be the same in a for(... in ...) loop
// if the order matters (as it looks like) better get them one by one by there names
for (i = 0, max = 5; i <= max; i++) {
arr.push(value["val" + i]);
}
// save the value in a global variable
filter = "{" + arr.join(",") + "}";
console.log(filter);
});
Related
I have a job to refractor strings to start using json so they can just pass json objects. So I have made array of names and then I'm trying to go through and make key and values but I'm getting an error in the console that it cant find x of no value. Can someone point me in the right direction?
var newName = ['ManagingOrg', 'ActiveOrg', 'Severity', 'SeverityClassification', 'WorkQueue', 'TicketState',................ to long to post];
$().each(newName, function (key, value) {
key = newName[this];
value = newValues[this] = $('#' + key).val();
newArray = [key][value];
newArray = JSON.stringify(newArray);
alert(newArray);
$('.results').html(origArray[TicketNumber]);
});
I'm assuming you have "newValues" and "origArray" defined elsewhere?
In any case you'll need to at least adjust the following:
"$().each" should be $.each
"newArray" should be defined outside and you should use newArray[key] = value
you don't have a variable "TicketNumber" defined and so you should wrap "TicketNumber" in quotes
this is a reserved word so you shouldn't use it in "newName[this]" or "newValues[this]"
I suggest using a for loop instead of $.each() based on what you're trying to do inside.
https://msdn.microsoft.com/en-us/library/bb299886.aspx
var origArray = [];
var newName = ['ManagingOrg', 'ActiveOrg', 'Severity', 'SeverityClassification'
];
for (var i = 0; i < newName.length - 1; i++) {
var object = {};
object[newName[i]] = newName[i];
object = JSON.stringify(object);
origArray.push(object);
}
I have a Jquery function that helps with validation over 1 object. I need to expand it so that the function will run over 3 different objects. I am trying to define a function that takes a parameter(whichquote) to insert the appropriate object in the function. Here is my code. What I am doing wrong? I assume I do not have the selector correct as the code works if I put it in.
Original Function that works:
var depends = function() {
var selectorD = $("input[name^='lead[quote_diamonds_attributes]'], select[name^='lead[quote_diamonds_attributes]']");
var vals = '';
selectorD.not(':eq(0)').each(function () {
vals += $(this).val();
});
return vals.length > 0;
};
Function I am trying to create that allows me to use it on other objects. This currently does not work.
var depends = function(whichquote) {
var selectorD = $("input[name^='lead[+ whichquote +]'], select[name^='lead[+ whichquote +]']");**
var vals = '';
selectorD.not(':eq(0)').each(function () {
vals += $(this).val();
});
return vals.length > 0;
};
I think the problem is with my concating in the var selectorD but cannot seem to get the syntax correct.
Your selector isn't actually inputting whichquote because the string concatenation is incorrect.
Try
var selectorD = $("input[name^='lead[" + whichquote + "]'], select[name^='lead[" + whichquote +"]']");
I have the following javascript code that does not work as I would expect it to. I have a list of checkboxes of which two of the items are "TestDuration" and "AssessmentScores". I'm trying to iterate through the list (which works fine) and have it add the values that are checked to the array.
var SAIndex = 0;
var SSIndex = 0;
var ScoresIndex = 0;
var SubAssessments = [];
var SubAssessmentScores = [];
//Get to the container element
var SSList = document.getElementById("islSubAssessmentScore_container");
//turn it into an array of the checkbox inputs
SSList = SSList.getElementsByTagName("input");
//create a temporary object to store my values
var tempPair = new Object();
//iterate through the checkbox lists
for(var i = 1; i < SSList.length;i++)
{
//if the value is checked add it to the array
if (SSList[i].checked)
{
var P = SubAssessments[SAIndex];
var V = SSList[i].value;
//tempPair.Parent = SubAssessments[SAIndex];
tempPair.Parent = P;
//tempPair.Value = SSList[i].value;
tempPair.Value = V;
//show me the values as they exist on the page
alert(tempPair.Parent + "|" + tempPair.Value);
SubAssessmentScores.push(tempPair);
//show me the values I just added to the array
alert(SubAssessmentScores.length-1 + "|" + SubAssessmentScores[SubAssessmentScores.length-1].Parent + "|" + SubAssessmentScores[SubAssessmentScores.length-1].Value);
//uncheck the values so when I refresh that section of the page the list is empty
SSList[i].checked = false;
}
}
//output the list of objects I just created
for (i = 0;i < SubAssessmentScores.length;i++)
alert(i + "|" + SubAssessmentScores[i].Parent + "|" + SubAssessmentScores[i].Value)
Now what happens is that when I iterate through the list I get the following alerts:
-first pass-
StudentID|TestDuration
0|StudentID|TestDuration
-second pass-
StudentID|AssessmentScores
1|StudentID|AssessmentScores
This is what I expect to output... However at the end of the code snippet when it runs the for loops to spit out all the values I get the following alerts...
0|StudentID|AssessmentScores
1|StudentID|AssessmentScores
I can't for the life of me figure out why it's replacing the first value with the second value. I thought it might be using a reference variable which is why I added in the P and V variables to try to get around that if that was the case, but the results are the same.
This is because you are adding the same variable every iteration of the loop.
Try changing your push like this:
SubAssessmentScores.push({
Parent: P,
Value: V
});
That said, I recommend you study a little more javascript and conventions in the language, for example your variable naming is frowned upon because you should only use capital letters on the beginning of a name for constructor functions.
A good book is Javascript the good parts by Douglas Crockford.
I am currently trying to retrieve the corresponding dial_code by using the name which I am obtaining as a variable.
The application uses a map of the world. When the user hovers over a particular country, that country is obtained using 'getRegionName'. This is then used to alter the variable name. How can I use the variable name to retrieve the dial_code that it relates to?
JSON
var dialCodes = [
{"name":"China","dial_code":"+86","code":"CN"},
{"name":"Afghanistan","dial_code":"+93","code":"AF"}
];
The following code runs on mouse hover of a country
var countryName = map.getRegionName(code);
label.html(name + ' (' + code.toString() + ')<br>' + dialCodes[0][countryName].dial_code);
This code doesn't work correctly. The dialCodes[0][countryName].dial_code is the part that is causing the error, but I'm not sure how to correctly refer to the corresponding key/value pair
If you have to support old browsers:
Loop over the entries in the array and compare to the given name:
var dialCode;
for(var i = 0; i < dialCodes.length; i++) {
if(dialCodes[i].name === countryName) {
dialCode = dialCodes[i].dial_code;
break;
}
}
label.html(countryName + ' (' + dialCode + ')');
If you browser support Array.prototype.filter:
dialCodes.filter(function(e) { return e.name === 'China' })[0].dial_code
If you have control over it, I recommend making your object more like a dictionary, for example if you are always looking up by the code (CN or AF) you could avoid looping if you did this:
var dialCodes = {
CN: { "name":"China","dial_code":"+86","code":"CN" },
AF: {"name":"Afghanistan","dial_code":"+93","code":"AF"}
};
var code = dialCodes.CN.dial_code;
Or
var myCode = 'CN'; // for example
var code = dialCodes[myCode].dial_code;
Since it's an array you can use filter to extract the data you need.
function getData(type, val) {
return dialCodes.filter(function (el) {
return el[type] === val;
})[0];
}
getData('code', 'CN').dial_code; // +86
I'm currently using javascript eval() to check and create a multidimensional object that I have no idea of the depth.
Basically, I want to know if there's any way to create this multi-depth object. The object can be as deep as result['one']['two']['three']['four']['five']['six']['seven']. I know there are cases where using eval() is perfectly fine, but I'm also worried about performance. I thought about referencing each depth to a new variable, but I don't know how to do pointers in Javascript
create = function(fields, create_array){
var field;
for (j = 0; j < len; j++){
field = fields.slice(0, j).join('');
if (field){
// is there any way to do this without eval?
eval('if (typeof result' + field + ' == "undefined" || !result' + field + ') result' + field + ' = ' + (create_array?'[]':'{}') + ';');
}
}
}
How about
var deep = { one: { two: { three: { four: { five: { six: { seven: 'peek-a-boo!' }}}}}}};
I don't see what "eval()" has to do with this at all; there's no reason to "initialize" such an object. Just create them.
If you wanted to write a function with an API like you've got (for reasons I don't understand), you could do this:
function create(fields, create_array) {
var rv = create_array ? [] : {}, o = rv;
for (var i = 0; i < fields.length; ++i) {
o = o[fields[i]] = create_array ? [] : {};
}
return rv;
}
There doesn't seem to be any point to the "create_array" flag, since you're presumably always using strings for keys.
Never mind, found my way in. I used a recursive function to ensure that the object was created properly.
create = function(create_array, res, path){
var field = fields.shift();
if (field){
if (typeof res[field] == "undefined" || !res[field]) res[field] = (create_array?[]:{});
path.push('["' + field + '"]');
create(create_array, res[field], path);
}
}
var result = {}, strpath = [], fields[];
create(true, result, strpath);
eval('result' + strpath.join('') + ' = value;');
being variable "field" a variable outside the function, that contained the levels of the object. doing result["field"]["name"]["first"] = value without the ["field"] or ["name"] field existing or defined as an object, would throw an error and stop execution, that's why I'm pre-creating the object variable, either as an array or object.
I couldn't find another option for the second eval() though. There's no way to provide a way to access multiple properties on an object without knowing the depth.