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js utility method record dynamic loading css/js 1. Dynamically load js file to head tag and execute callbackMethod call: dynamicLoadJs(' http://www.yimo.link/static/j... ', function(){alert('loading succeeded')}); /** * Load JS dynamically * @param {string} url Script address * @param {function} callback Callback function ...

Animation review parallax scrolling plug-inParallax Scrolling (Parallax Scrolling) refers to the web page display technology that multi-level elements move in different degrees in the process of web page scrolling, forming a three-dimensional motion effect visuallyThe main core is that the foreground and background move at different speeds to ...

The source code is as follows: <template> <div class="el-switch" :class="{ 'is-disabled': switchDisabled, 'is-checked': checked }" role="switch" :aria-checked="checked" :aria-disabled="switchDisabled" @click="switchValue" > <input class="el-switch__input" type="checkbox" @change=" ...

js realizes the function of uploading pictures. The effect is to see the pictures first to suppress the shock Picture upload.gif Principle: Structure part: input tag You may not have noticed that the input tag has the same effect. 1. The type attribute is file 2.accept is the file format allowed to be selected (if it is a pic ...

Prototype inheritance function Person(name,sex){ this.name=name; this.sex=sex; this.friends = {lily:'female',lucy:'female'}; this.showFriends=function(){ var str = '' for(i in this.friends){ str+=i +' '+this.friends[i] +','; } console.log('my friends:'+str); } } Person.prototype.h ...

java synchronization thread (2) Synchronization method Synchronization method: Using the synchronized keyword to decorate a method is called a synchronized method. The synchronization monitor of the synchronization method is this, which is the object itself. It is very convenient to implement thread safe classes throug ...

Format restriction There are many functions of forms in antd. Here are some common forms input format validation in antd: 1. The input box cannot be empty, as follows: {getFieldDecorator('name', { rules: [{ required: true, message: 'Name cannot be empty', }], })( <Input placehold ...

About string basic methods Hello everyone, I'm back! In the previous several issues, we have simply understood the basic operation of pandas, but as long as the data is involved, the most common type is String, so many times we are actually dealing with strings, so today, I will share my own summary of the common methods about strings to you, h ...

How to break through the private attribute limit of class -- trying to break the encapsulation of class, a little "against the sky" feeling. Method 1. Add friend function #include<iostream> using namespace std; class X { private: int m_Age; public: X() : m_Age(1){} template<typename T> void Func(c ...

Environment introduction Openlayers ol.js v5.3.0 Highcharts highcharts.js v7.0.1 jquery jquery-3.3.1.js v3.3.1           Display effect The enlargement and reduction of map have no effect on the size of statistical map Take pie chart as an example 1. Add a map and render the points where the statistical map is located, vector is th ...