javascript face recognition script

? (1) Reduce the number of HTTP requests: CSS Sprites, JS, CSS source compression, picture size control appropriate; web Gzip,cdn hosting, data caching, image server.(2) Front-end template js+ data, reduce the bandwidth wasted due to HTML tags, front-end with variables to save AJAX request results, each operation of local variables, no request, reduce the number of requests(3) using innerHTML instead of DOM operation, reduce DOM operation times and optimize

Today, sorting out their folders, found that once interviewed Tencent interns were asked to hang the face of the questions, I will be prepared for your reference. It was the handwriting code that was required. Khan, I was in a weak burst! 1, converts the given array to a random array Array.prototype.shuffle=function () { var resultarr=[]; var len=this.length; while (len) { var _index=parseint (Math.random ()

There are four short JavaScript scripts below, and if you can predict the results of your script, your JavaScript skills will be fine. If the answer is wrong, you can fill out the missing knowledge accordingly. Anyway is very simple, the wrong answer just means you do not understand it, look at the information will soon understand. Then do it first, to see the an

DOCTYPE HTML>HTMLLang= "zh"> Head> MetaCharSet= "UTF-8" /> Metaname= "Viewport"content= "Width=device-width, initial-scale=1.0" /> Metahttp-equiv= "X-ua-compatible"content= "Ie=edge" /> title>JavaScript closed-Face questionstitle> Head> Body> Script> functionFN (n, O) {console.log (o); return{fn:function(m) {

Look at this line of code first: It's kind of ... It's not good. "Where should I put it?" "Developers would be surprised," put the dots on the The perfect solution to this problem involves scripting and dividing: the scripts that are responsible for making the page look better and more used should be loaded immediately, and the scripts that can be loaded later will then be loaded. But how can you Shang these scripts and make sure they are available when they are invoked? First,

javascript| Script | string Although JavaScript has many uses, processing strings is one of the most popular. Let's take a closer look at the use of JavaScript to manipulate strings. In JavaScript, a String is an object. String objects are not stored as character arrays, so