Substring helper in handlebars - javascript

Can i write a helper in Handlebars that can tell if a string is a substring of another string?
I wrote the following code, but it doesn't seem to be working
This is the helper:
'if_sub': function(a, b, opts) {
if (a.includes(b))
return opts.fn(this);
else
return opts.inverse(this);
}
And this is the implementation:
{{#if_sub colvalues "success"}}
<td class="log-success"> {{colvalues}} </td>
{{/if_sub}}


just little mistake . if (a.includes(b)) should be if (b.includes(a))
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>How to render html with Handlebars.js</title>
<script src="https://cdn.jsdelivr.net/handlebarsjs/4.0.3/handlebars.min.js"></script>
<script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
<script id="simple-template" type="text/x-handlebars-template">
{{#if_sub colvalues "success"}}
<td class="log-success"> {{colvalues}} </td>
{{/if_sub}}
</script>
<script type="text/javascript">
Handlebars.registerHelper("if_sub",function(a, b, opts) {
if (b.includes(a)){
return opts.fn(this);
}
else{
return opts.inverse(this);
}
});
//wait for page to load
$(document).ready(function(){
var raw_template = $('#simple-template').html();
var template = Handlebars.compile(raw_template);
var data = {colvalues:"suc"}; //change value and see.
var html = template(data);
$('#main').append(html);
});
</script>
</head>
<body>
<!-- Insertion point for handlebars template -->
<div id="main" style="margin-left:100px">
</div>
</body>
</html>

Related

Mustache not rendering JSON data

So, I have just started with Mustache JS. I have this simple html file
<!DOCTYPE html>
<html lang="en">
<head>
<title>JavaScript Mustache template</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/mustache.js/2.3.0/mustache.min.js"></script>
</head>
<body>
<script id="mp_template" type="text/template">
<p>Country: {{ name }}</p>
<p>Capital: {{ capital }}</p>
<p>Flag: <img src={{{ flag }}} ></p>
</script>
<div id="mypanel"></div>
<button id="btn">Load</button>
<script>
$(function () {
$("#btn").on('click', function () {
$.getJSON('https://restcountries.eu/rest/v2/name/aruba?fullText=true', function (data) {
var template = $("#mp_template").html();
var text = Mustache.render(template, data);
console.log(data);
$("#mypanel").html(text);
});
});
});
</script>
Its getting some data back via the .getJSON call and then trying to render that data on button click. No data is rendering. Can someone please advise what am I doing wrong ?
Please see this URL to see the structure of returned data https://restcountries.eu/rest/v2/name/aruba?fullText=true

That API returns a JSON array, not an object, that's why it isn't working.
If you only want the first item, you can do:
var template = $("#mp_template").html();
var text = Mustache.render(template, data[0]);
console.log(data);
$("#mypanel").html(text);
Or you can iterate through all the countries, by passing the array in an object property: { countries: data } and use {{#countries}} in your template
$(function () {
$("#btn").on('click', function () {
$.getJSON('https://restcountries.eu/rest/v2/name/aruba?fullText=true', function (data) {
var template = $("#mp_template").html();
var text = Mustache.render(template, { countries: data });
$("#mypanel").html(text);
});
});
});
<!DOCTYPE html>
<html lang="en">
<head>
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/mustache.js/2.3.0/mustache.min.js"></script>
</head>
<body>
<script id="mp_template" type="text/template">
{{#countries}}
<p>Country: {{ name }}</p>
<p>Capital: {{ capital }}</p>
<p>Flag: <img src={{{ flag }}} style="width: 50px"></p>
{{/countries}}
</script>
<div id="mypanel"></div>
<button id="btn">Load</button>
</body>

moment-countdown js library giving me a weird variable assignment?

The library I am using: https://github.com/icambron/moment-countdown
My code:
<!DOCTYPE html>
<html>
<head>
<title>Test</title>
<!-- https://github.com/icambron/moment-countdown -->
<script src="moment.min.js"></script>
<script src="countdown.min.js"></script>
<script src="moment-countdown.min.js"></script>
</head>
<body>
<input type="datetime-local" id="timeInputHTML" onchange="mainfunc()>
<p id="pel"></p>
<script>
function mainfunc() {
timeVar = document.getElementById("timeInputHTML").value;
// var timeInputVar = moment("2045-01-01 00:00:00").countdown().toString();
var timeInputVar = moment(timeVar).countdown().toString();
document.getElementById("pel").innerHTML = timeInputVar;
}
// Run above function every 1 second
setInterval(mainfunc, 1000);
</script>
</body>
</html>
The question: How do I make the variable timeVar when it obtains its values from timeInputHTML in the HTML code, not contain contain a T in the middle like so: "2018-05-05T14:30" I believe this is what is wrong with my code and is causing the Uncaught TypeError if it is not the issue then please can you explain to me what is please?
The image / screenshot:

<!DOCTYPE html>
<html>
<head>
<title>Test</title>
<!-- https://github.com/icambron/moment-countdown -->
<script src="moment.min.js"></script>
<script src="countdown.min.js"></script>
<script src="moment-countdown.min.js"></script>
</head>
<body>
<input type="datetime-local" id="timeInputHTML" onchange="mainfunc()">
<p id="pel"></p>
<script>
function mainfunc() {
timeVar = document.getElementById("timeInputHTML").value;
// var timeInputVar = moment("2045-01-01 00:00:00").countdown().toString();
var timeInputVar = moment(timeVar).countdown().toString();
document.getElementById("pel").innerHTML = timeInputVar;
}
// Run above function every 1 second
setInterval(mainfunc, 1000);
</script>
</body>
</html>
your are missing " this in input function it should be like this
<input type="datetime-local" id="timeInputHTML" onchange="mainfunc()">

Getting a value from a color picker and returning it

I want to know how you would go about getting a value from a color picker and returning it to a js script
Here is the HTML Code
<!DOCTYPE html>
<script type="text/javascript" src="Scripts/jquery-3.1.1.js"></script>
<script type="text/javascript" src="js/bootstrap-colorpicker.js"></script>
<link rel='stylesheet' href='css/bootstrap-colorpicker.css' />
<script type="text/javascript" src="js/bootstrap-colorpicker.min.js"></script>
<link rel='stylesheet' href='css/bootstrap-colorpicker.min.css' />
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
</head>
<body>
<p> test test test</p>
<div id="cp2" class="input-group colorpicker-component">
<input type="text" value="#00AABB" class="form-control" />
<span class="input-group-addon"><i></i></span>
</div>
<script>
$(function () {
$('#cp2').colorpicker({
color: '#AA3399',
format: 'rgb'
})
});
</script>
</body>
</html>
<script>document.getElementById("cp2").value = function () {
return rgb;
}
</script>
`
I am looking to return the value of the color picker which is in RGB format to a js script so that I will to able to assign vars like this
var 1 = rgb[1]
var 2 = rgb[2]
var 3 = rgb[3]
`
If you decide to help me I will be thankful and you could please explain so I can learn from it.

Check javascript function:
<script>
(function() {
var rgb = document.getElementById("cp2").value ;
return rgb;
})();
</script>

How to get the autocomplete in angular js?

I have a object which contains name and id.I just want to do the autocomplete based on name.I have tried the code as shown below
//Js file
var app=angular.module("myapp",[]);
app.controller("controller",['$scope',function($scope){
$scope.persons=[
{
Name:"Bhavani",
Id:67
},
{
Name:"Mamata",
Id:66
},
{
Name:"Prasanna",
Id:65
},
{
Name:"Ramya",
Id:64
},
{
Name:"Navya",
Id:63
}
];
$scope.complete=function(){
$("#autocomp").autocomplete({
source: $scope.persons.Id
});
};
}]);
//Html file
<!DOCTYPE html>
<html ng-app="myapp">
<head>
<meta charset="UTF-8">
<title>Auto Complete based on name</title>
<script src="angularfiles/angular.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.min.js"></script>
<script src="Jsfiles/autocomp.js"></script>
</head>
<body ng-controller="controller">
<div ng-repeat="p in persons">{{p.Name}}
</div>
<div class="ui-widget">
<input type="text" id="autocomp" ng-keyup="complete()">
</div>
</body>
</html>
The above code may have some errors .Its not getting output which i want to have .Can anyone help me out to solve this problem.

Try like this,
HTML:
<div ng-app = "myapp">
<div ng-controller="controller">
<div class="ui-widget">
<input type="text" id="autocomp" auto-complete>
</div>
</div>
</div>
Js:
var app = angular.module("myapp",[]);
app.controller("controller",function($scope){
$scope.availableTags = [
{
Name:"Bhavani",
Id:67
},
{
Name:"Mamata",
Id:66
},
{
Name:"Prasanna",
Id:65
},
{
Name:"Ramya",
Id:64
},
{
Name:"Navya",
Id:63
}
];
}).directive("autoComplete",function(){
return function(scope,element,attrs){
var names =$.map(scope.availableTags,function(value){ return value.Name;
});
element.autocomplete({
source: names
});
};
});
Working jsbin

This is how you should use any jQuery API's in an AngularJS project (i believe). Anytime you are doing DOM Manipulation or jQuery things, it should be placed inside the link: function() {} via directive.
Probably the main problem with your code was that the source: $scope.persons.Id is just a number. The source needs to be an array of Strings (at least as per the documentation). So I seperated all the names from your persons array and placed them in a new array peopleNames
<!doctype html>
<html lang="en" ng-app="myapp">
<head>
<meta charset="utf-8">
<title>jQuery UI Autocomplete - Default functionality</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<script src="vendors/angular.min.js"></script>
</head>
<body ng-controller="controller">
<div ng-repeat="p in persons">{{p.Name}}
</div>
<div class="ui-widget">
<input type="text" id="tags" autocomplete-directive>
</div>
<script>
var app = angular.module("myapp",[]);
app.controller("controller",['$scope',function($scope){
$scope.persons=[
{
Name:"Bhavani",
Id:67
},
{
Name:"Mamata",
Id:66
},
{
Name:"Prasanna",
Id:65
},
{
Name:"Ramya",
Id:64
},
{
Name:"Navya",
Id:63
}
];
// array of only strings autocomplete
$scope.peopleNames = [];
for(var i = 0, j = $scope.persons.length; i < j; i++) {
$scope.peopleNames.push($scope.persons[i].Name);
}
}]);
app.directive('autocompleteDirective', [function($scope) {
return {
link: function(scope, element, attrs) {
element.autocomplete({
source: scope.peopleNames
});
}
};
}]);
</script>
</body>
</html>

Thank For every one for suggesting me answer.I have also done in another way .It may help to others.
//html file
<!DOCTYPE html>
<html ng-app="myapp">
<head>
<title>Auto Complete based on name</title>
<script src="angularfiles/angular.js"></script>
<script src="angularfiles/angular-animate.js"></script>
<script src="angularfiles/ui-bootstrap-tpls-0.13.4.js"></script>
<script src="angularfiles/bootstrap-theme.css"></script>
<script src="Jsfiles/autocomp.js"></script>
</head>
<body ng-controller="controller">
<div ng-repeat="p in persons">{{p}}</div>
<div class="ui-widget">
<input type="text" ng-model="selected" typeahead="p.Name for p in persons | filter:$viewValue">
</div>
</body>
</html>
//js file
var app = angular.module("myapp",['ui.bootstrap']);
app.controller("controller",['$scope',function($scope){
$scope.persons=[
{
Name:"Bhavani",
Id:67
},
{
Name:"Mamata",
Id:66
},
{
Name:"Prasanna",
Id:65
},
{
Name:"Ramya",
Id:64
},
{
Name:"Navya",
Id:63
}
];
}]);

Add CSS to a div using a function in knockoutJS

I am trying to implement CSS binding in knockoutJS.
I want to print all the names in the names array, One after another.
The catch is that there is another array which has some special names.
All the special names should get "good" CSS class. And the rest, "bad" css class.
Here is something that i have tried:
HTML
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery.min.js"></script>
<link href="http://getbootstrap.com/dist/css/bootstrap.css" rel="stylesheet" type="text/css" />
<script src="http://getbootstrap.com/dist/js/bootstrap.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/knockout/3.0.0/knockout-min.js"></script>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<meta charset="utf-8">
<title>JS Bin</title>
</head>
<body>
<div data-bind="foreach : items">
<div data-bind="text: $data, css: checkName($data)" ></div>
</div>
</body>
</html>
JAVASCRIPT
var dataModel = function(){
self.items = ko.observableArray(["don","bom","harry","sharry","ron"]);
self.names = ["ron","harry"];
self.checkName = ko.observable(function(name){
if( $.inArray(name,self.names) ){
return "good";
}
else{
return "bad";
}
});
};
ko.applyBindings(new dataModel());
FIDDLE - http://jsbin.com/difaluwo/2/edit
Now its not woking. In console its giving me "Script error. (line 0)"
Thanks !

The out of the box CSS binding is a little tricky. You specify class name and then the condition when it will be applied.
JSBIN
<div data-bind="foreach : items">
<div data-bind="text: $data, css: { good: isGoodName($data), bad: !isGoodName($data) }" ></div>
</div>
And your view model:
var dataModel = function(){
self.items = ko.observableArray(["don","bom","harry","sharry","ron"]);
self.names = ["ron","harry"];
self.isGoodName = function (name) {
return $.inArray(name, self.names) !== -1;
};
};
ko.applyBindings(new dataModel());

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