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Several ways to use EL expressions in javascript

1. You can enclose the EL expression using double quotes. This does not work for everything, only for type ${param} 2. You can use it as a parameter to a function in javascript. 3. The principle of using hidden form fields to pass values is the same as (1

2025-08-28
Array method notes in JS

push() method: You can add one or more elements to the end of the array and return a new length pop() method: You can delete the last element of the array and return the deleted element. Note: If the array is empty, the method does not perform any operati

2025-08-28
Deep understanding of self-executing anonymous functions in Javascript

Format: (function(){//code})(); Explanation: This is quite elegant code (if you see it for the first time, you may be confused :)), the first pair of brackets surrounding the function (function(){}) returns an unnamed function to the script, and then a pa

2025-08-28
BootStrap Typeahead automatic completion plugin instance code

The key code is as follows: $('#Sale').typeahead({ajax: {url: '@Url.Action("../Contract/GetSale")',//timeout: 300,method: 'post',triggerLen

2025-08-28
How to display multiple rows in javascript alert box in java

If you directly display multiple lines in the javascript code, just add /n directly: The code copy is as follows: alert("first line/n second line"); But in java code, /n is not possible, only //n can display multiple lines! ! ! Copy the code as

2025-08-28
AngularJs bootstrap detailed explanation and sample code

The first article of AngularJs study notes series, I hope I can keep writing it. The content of this article mainly comes from the content of the http://docs.angularjs.org/guide/ document, but it also adds some of your own understanding and attempt result

2025-08-28
JS implements random display of image effects when page loading

This article describes the random display of image effects when JS implements page loading. Share it for your reference, as follows:<html><head><title> JS Random Image Effect</title>

2025-08-28
A super comprehensive summary of JavaScript's common code writing specifications

1. Global namespace pollution always wraps the code in an immediate function expression to form an independent module. Not recommended var x = 10, y = 100;console.log(window.x + ' ' + window.y);recommended;(function(wind

2025-08-28
nodejs gets the implementation code of IP addresses of native intranet and external networks

Implementation code: Copy the code as follows: var os = require('os');function getLocalIP() {var map = [];var ifaces = os.networkInterfaces();console.log

2025-08-28
Talk about JavaScript's New Keywords

Prototypes and closures are the most common, most difficult to understand, and most easily regarded as two parts of the problem in JavaScript. Of course, they also have their extensions, such as scope chains, inheritance, etc. Recently, I have also read t

2025-08-28
JS simple example of whether all forms in form are empty

As shown below: function checkForm(){ var input_cart=document.getElementsByTagName_r("INPUT"); for(var i=0; i

2025-08-28
Illustration of the triangle relationship between prototype, proto and constructor

There are many and chaotic relationships in JavaScript. The scope chain is a one-way chain relationship, which is quite simple and clear; the calling relationship of this mechanism is a bit complicated; and as for the prototype, it is a triangular relatio

2025-08-28
Highcharts learning axis

Preface All charts except pie charts have X-axis and Y-axis. By default, the x-axis is displayed at the bottom of the chart and the y-axis is displayed on the left (with multiple y-axis, it can be displayed on the left and right sides). By setting chart.i

2025-08-28
JavaScript implements the conversion of Arabic and Chinese numerals

Characteristics of Arabic numerals to Chinese numerals: Each counting numerals is followed by a power position, which includes: ten, hundreds, thousands, ten thousand, and billion. Taking "ten thousand" as a sub-section corresponds to a position

2025-08-28
HTML5 resource preload (Link prefetch) detailed introduction (to accelerate your web page)

Comment: Whether it is a browser developer or a normal web application developer, they are all making a joint effort: to make web browsing feel faster. There are many known techniques that can make your website faster: use CSS sprites, use image optimizat

2025-08-28

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