I'm facing an issue where the events happening in the owl carousel does not update data values outside of the function
This is my code:
endScenario: function() {
$(".owl-carousel").on('changed.owl.carousel', function(e) {
this.carouselIndex = e.item.index;
var numCarouselItems = $('.carousel__item').length - 1;
if (numCarouselItems === this.carouselIndex) {
this.isEndingActive = true
}
console.log(this.carouselIndex)
console.log(this.numCarouselItems)
console.log("this is inside the owl function : " + this.isEndingActive)
});
console.log("this is outside the owl function : " + this.isEndingActive)
}
data: {
isEndingActive: false,
}
The user is supposed to scroll through the carousel and when the user is at the final slide of the carousel, it will trigger the endScenario function which suppose to update the isEndingActive: false -> true but when the requirement is fulfil, it does not trigger the change from false to true. Is there a reason why and how do I rectify this?
it seems the usage of this
the outside this is not equal the inside this
you can resolve it by arrow function
$(".owl-carousel").on('changed.owl.carousel', e => {}
or you can save a variable
endScenario: function() {
const self = this;
$(".owl-carousel").on('changed.owl.carousel', function(e){
//use self replace this
});
}
Related
I have a Vue Component like below:
Test.vue
private input: string = "";
private pageNumber: number = 0;
mounted() {
window.onpopstate = function() {
this.input = "test";
this.pageNumber = 1;
}
this.init({ page: this.page, input: this.input }); // reset search state when mounted
}
But if I put this.input = "test" inside the window.onpopstate function, it's log with Property 'input' does not exist on type 'WindowEventHandlers'.
So how can I assign value for this.input inside the window.onpopstate function?
Thank you!
You are using the function keyword to create a function. That means your this can be changed. Window events like window.onpopstate always set this to window. That means you are setting input and pageNumber on window. To fixy this you could use an arrow function.
window.onpopstate = () => {
this.input = "test";
this.pageNumber = 1;
}
i try to change the navbar properties on a jqgrid in a callback function without succes.
The grid is display afeter user is chosing a period. Depend on either the period is open or close user can or cannot edit, add, delete rows. So the navbar need to change properties dynamically.
My code look like that:
$('#mygrid').jqGrid({
// some properties of my grid that works fine
pager : '#gridpager'
});
$("#mygrid").bind("jqGridLoadComplete",function(){
$.ajax({
url: 'checkifperiodopen.php',
data: {
$("#period").val()
},
success: function(data){
if(period==='open'){
jQuery("#mygrid").jqGrid('navGrid','#gridpager',{add:false,edit:false,del:true,search:true,refresh:true});
}
if(period==='close'){
jQuery("#mygrid").jqGrid('navGrid','#gridpager',{add:true,edit:true,del:true,search:true,refresh:true});
}
}
});
});
$('#validChossenPeriod').click(function () {
ajax call to get data on choosen period
success:function(data){
$("#mygrid").jqGrid('clearGridData');
$("#mygrid").jqGrid('setGridParam', { datatype: 'local'});
$("#mygrid").jqGrid('setGridParam', { data: data});
$("#mygrid").trigger('reloadGrid');
}
});
I finally found the answer by show or hide the div that include the navgrid button:
grid = $("#mygrid");
gid = $.jgrid.jqID(grid[0].id);
var $tdadd = $('#add_' + gid);
var $tdedit = $('#edit_' + gid);
var $tddel = $('#del_' + gid);
$("#mygrid").jqGrid('navGrid','#gridpager',{add:true,edit:true,del:true,search:true,refresh:true});
condition if false =
$tdadd.hide();
$tdedit.hide();
$tddel.hide();
if true =
$tdadd.show();
$tdedit.show();
$tddel.show();
Why so complex? There is a other clear way to do this
var view_buttons = true;
if(condition_to_hide) {
view_buttons = false;
}
$("#mygrid").jqGrid('navGrid','#gridpager', { add:view_buttons, edit:view_buttons, del:view_buttons, search:true, refresh:true});
Trying to make a component in Vue.js, which first shows image via thumbnail, loading full image in background, and when loaded, show full image.
The thing which does not work, component does not react on change of showThumb flag in watch section. What is wrong?
Vue.component('page-image',
{
props: ['data'],
template:
'<img v-if="showThumb == true" v-bind:src="thumbSrc"></img>'+
'<img v-else v-bind:src="fullSrc"></img>',
data: function()
{
return { thumbSrc: '', fullSrc: '', showThumb: true };
},
watch:
{
data: function()
{
this.thumbSrc = data.thumbImg.url;
this.fullSrc = data.fullImg.url;
this.showThumb = true;
var imgElement = new Image();
imgElement.src = this.fullSrc;
imgElement.onload = (function()
{
this.showThumb = false; // <<-- this part is broken
} );
}
}
} );
Note: there is a reason why I do it via 2 img tags - this example is simplified.
Your onload callback will have a different scope than the surrounding watch function, so you cannot set your data property like this. Change it to an arrow function to keep scope:
imgElement.onload = () =>
{
this.showThumb = false;
};
See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions
Hi this question is related with my own answer here the thing is that the widget run only once, when the first database record object is show on the form view, but when I change to another record, the view its not updated with the actual record. I think that is because I run all the code in the ´start´ but I dont know how and where put he code to do this.
the code again:
(function (instance) {
var _t = instance.web._t,
_lt = instance.web._lt;
var QWeb = instance.web.qweb;
openerp.chess_base = function (instance, local) {
local.ShowBoard = instance.web.form.FormWidget.extend({
start: function () {
this.$el.append('<div id="board" style="width: 300px">BOARD GOES HERE</div>');
this.show_board();
},
show_board: function () {
var Game = new instance.web.Model("chess.game"),
record_id = this.field_manager.datarecord.id,
record_name = this.field_manager.datarecord.name,
self = this;
self.el_board = self.$('#board');
Game.query(['pgn']).filter([['id', '=', record_id], ['name', '=', record_name]]).all().then(function (data) {
console.log(data);
self.cfg = {
position: data[0].pgn,
orientation: 'white',
pieceTheme: '/chess_base/static/img/chesspieces/wikipedia/{piece}.png'
};
ChessBoard(self.el_board, self.cfg);
});
}
});
instance.web.form.custom_widgets.add('board', 'instance.chess_base.ShowBoard');
}
})(openerp);
In your start function:
this._ic_field_manager.on('view_content_has_changed', this, function() {
'put your code here'
})
EDIT:
Actually there's another event you could listen, 'load_record'.
Because 'view_content_has_changed' is triggered every time a single field in the view is modified, and you maybe don't want this behavior.
I have a form with dynamic fields. In the afterrender event of the form I want to set the afterLabelTextTpl property. I can set this property but I can't see it change in my form. How can I achieve this?
Snippet:
listeners: {
beforerender: function () {
var fields = me.getForm().getFields();
Ext.each(fields.items, function (f, idx) {
f.afterLabelTextTpl = requiredTpl;
console.log(f.afterLabelTextTpl);
}); //eo Ext.each
}
}
Edit:
I was looking for the beforerender method
Try
f.labelEl.dom.innerHTML = "LABEL:<span style='color:red;font-weight:bold' data-qtip='Required'>*</span>";
You can not use this property after the component is already rendered.
The initRenderTpl (which makes use of the label templates) method is run only if the component is not yet rendered. Once its rendered it will not run again.
You will need to update the DOM directly.
I would recomend something like this in your form:
setRequired: function(field, index) {
field.afterLabelTextTpl = requiredTpl;
},
initComponent: function(arguments) {
var me = this;
this.on('beforeadd', function(me, field){
var fields;
if (field.isXType('fieldset')) {
fields = field.query('field');
Ext.each(fields, me.setRequired);
} else {
me.setRequired(field);
}
});
// rest of logic
me.callParent(arguments);
},