jquery

问题 I need an javascript function that can do interpolate like the one for prototype js framework. Anyone have an interpolate function that is not depend on prototype? Jquery is welcome. Thanks. 回答1: Depending on your needs, something like this might work: String.prototype.interpolate = function(valueMap){ return this.replace(/\{([^}]+)\}/g, function(dummy, v){ return valueMap[v]; }); }; Usage: var params = { "speed":"slow", "color":"purple", "animal":"frog" }; var template = "The {speed} {color}

问题 I am trying to use waypoints.js to have elements fadein when scrolling to hit the elements. I have $(document).ready(function(){ $('.card').waypoint(function(down) { console.log('hit element'); $(this).addClass('card-fadeIn'); }, { offset: '100%' }); }); What this does is adds the class 'card-fadeIn' which is opacity 1 and an ease in animation. When I change it to $('.card').addClass('card-fadeIn'); It works fine, but adds opacity 1 to every card class and ruins the fadein effect. I was

问题 I am trying to integrate a cropping tool to my website (js plugging resizing cropping images canvas). This tool will let the user crop an image, open it in a new browser page, and give him the capacity to save the new image into the disk. The cropping code is as following: crop = function(){ //Find the part of the image that is inside the crop box var crop_canvas, left = $('.overlay').offset().left - $container.offset().left, top = $('.overlay').offset().top - $container.offset().top, width =

问题 I have created a form where you can add or delete table rows using javascript and jQuery. I would like to know how I can obtain and set the index for each table row such that sequence is maintained even if I were to delete and element from the middle of the table. The table is of the form: <thead> <tr> <th>Index</th> <th>Name</th> <th>Property</th> <th>Edit/Delete</th> </tr> </thead> <tbody> <tr> <td class="index">Index goes here (1)</td> <td>NameOne</td> <td>PropOne</td> <td><span class=

问题 I am trying to to make a hidden menu with jquery toggle. I have a button with a click event and a class menu with a toggle event. I want to make a CSS transition on the menu, or an effect to appear. I have a sidebar and I want to the menu to appear from left to right with a transition effect or something. $('.menu__btn').click(function(){ $('.menu').toggle(); }) .menu { background: #000; width: 240px; height: 100%; position:fixed; margin-left: 100px; display: none -webkit-box-shadow: inset

问题 Animating font sizes in Firefox has a nice smooth effect, while in Safari (and Chrome but less so) it is jumpy. By jumpy I mean the kerning and rendering on the text does not change smoothly, as if Safari is not able to keep up with the font sizes changing so fast. font size starts at 10px: $('#myel).animate({fontSize:'20px'}, 300); Is this normal behavior and is there some sneaky fix for this? 回答1: I believe this is down to rounding. Both in how font sizes are rendered and in how those fonts

问题 I have a requirement that when user has a date time exist in database only that time it shows date. But if database doesn't have date time then in text box it must be blank. But when page load datetimepicker set default value in it. So for that I have set autoUpdateInput to false it's working it set textbox to blank. But after that the datetimepicker doesn't set value in textbox. $('.datetimepicker').daterangepicker({ autoUpdateInput: false, singleDatePicker: true, showDropdowns: true,

问题 I have a dropdown list and I am using the Select2 jquery plugon which works great. One thing i ran into is a use case where each of the items is very long so the text wraps to 3 or 4 lines. I wanted to see if you can style the dropdowns to have alternative row color to make it easier to see where one item ends and another begins when you are scrolling down the list of items. Is this possible? 回答1: Yes, it's possible, in fact it's quite easy, this is how you do it: In your css stylesheet

问题 I am trying to make the below JSFiddle work for tablet/mobile devices (e.g. 'on touch' as well as 'click'). https://jsfiddle.net/lkw274/7zt1zL0g/87/ <div class="user-navigation"> <a class="mobile-menu-new" href=""><span></span>Menu</a> </div> $(document).ready(function() { $(".user-navigation a.mobile-menu-new").click(function (e) { e.preventDefault(); $(".user-navigation a.mobile-menu-new").toggleClass("current"); }); }); .current { background: #F00;} Expected behaviour: On clicking 'Menu',

问题 How to limit the number of element in an orderInput widget (from package shinyjqui ) ? For example, in the piece of code below I would like to select maximum 2 months in the first widget. ui.R library(shiny) library(shinyjqui) shinyUI(fluidPage( uiOutput("ui_source"), br(), uiOutput("ui_target1"), br(), uiOutput("ui_target2"), br() )) server.R shinyServer(function(input, output) { output$ui_source <- renderUI({ orderInput("source", label = "Months", items = month.abb, as_source = FALSE,