proveit javascript test

); }}, display:function(Container,data,view) {if(data) { This. Create (Data,view); } document.getElementById (Container). InnerHTML=html; HTML= ' '; } } return functionExcute (msg) {Msg.param=object.prototype.tostring.call (msg.param) = = = "[Object Array]"?Msg.param: [Msg.param]; Action[msg.command].apply (Action,msg.param)}) (); varProductdata =[{src:' Command/02.jpg ', Text:Peach Blossom}, {src:' Command/03.jpg ', Text:Sun}, {src:' Comman

); Third question 01 vara = 10; 02 sayHi(); 03 functionsayHi() 04 { 05 a = a + 10; 06 alert(a); 07 returna; 08 } 09 alert(a); 10 alert(sayHi()+10); Question Fou

How do you test regular expressions? Write the Code directly in a large segment, wait for the program to run there, and then use alert to display the result? Or is it possible to temporarily write a page and discard it after testing?You can try this page. Although it is rough, it is enough to test the regular expression :))I. Description:1. My intention is to exchange technology. I am very good at the level

) {//determines whether the current item is present in the temporary array and does not execute6Arr.push ( This[i]);//Push the current item to the temporary array7 }8 }9Console.timeend ("Array de-weight Method 3");//record when the execution endedTen returnarr; One}Efficiency test Method:1 varARR1 = [];//create an array to go to the heavy2 for(vari = 0; I //traversal of 200,000 data3Arr1.push (parseint (Math.random () * 10) + 1);//ret

from the last matched lastIndex.Var str = "1a1b1c ";Var reg = new RegExp ("1 .","");Alert(reg.exe c (str) [0]);Alert(reg.exe c (str) [0]);Both outputs are 1a. Now let's look at the specified parameter g:Var str = "1a1b1c ";Var reg = new RegExp ("1.", "g ");Alert(reg.exe c (str) [0]);Alert(reg.exe c (str) [0]);The first output is 1a and the second output is 1b. MatchMatch is a method of String objects.Var str = "1a1b1c ";Var reg = new RegExp ("1 .","");Alert (str. match (reg ));Match is a bit li

print the value of the Reg.lastindex in the code, the value is 7, here to explain the lastindex value, lastIndex is an integer, indicating the beginning of the search for the next occurrence of the character position, from 0. See here is not an epiphany, and then the next match, our search is from 7 This position began, so naturally no last only name, then we take this small ' bug ' is very simple.var str = ' My last name is Junhua 'var reg =/\b\w{4}\b/= 0; var result, = 1 while (i > 0) {

IE11 is coming along with Windows 8.1 preview. Today, IE11 is logged on to Windows 7, this platform provides the same complete and faster page loading speed as IE11 of Win8.1, more new standards support, and brand new F12 Developer Tools. On the basis of compatibility, interoperability, and security, IE11 has greatly improved the performance of the JavaScript engine Chakra and added support for the ECMAScript 6 standard, including let, const, Map, Se

MooTools is a good JavaScript framework, it is simple, modular, easy to use, developers can quickly start to write scalable, compatible with good JavaScript code. I used this for two days, feeling and prototype usage is exactly the same, but the function seems to strengthen, have a lot of effect, drag and drop. And it's object-oriented, inheritance more intuitive than prototype, so I began to learn this fra

1 Problem descriptionIn a dialog box, the user enters a set of strings that need to satisfy a length of 1 to 6 and need to be made up of 0-9,a-z, or A-Z, and other use cases are illegal.2 Equivalence class Partitioning Valid equivalence classes Number Invalid equivalence class Number Number of characters 1-6 1 0 4 2 7 5 Character type A-z,a-z,0-9 3 Other character

A custom string connection class for stitching strings, which is better than "+" to improve performancefunction StringBuffer () {This._strs = new Array ();}StringBuffer.prototype.append = function (str) {This._strs.push (str);};StringBuffer.prototype.arrayToString = function () {Return This._strs.join ("");}; And when we use this class, we can go directly to the following methods: The code is as follows Copy Code var strbuff=new stringbuffer ()

This article mainly introduces the use of the test () method in the regular expression of JavaScript, which is the basic knowledge in the learning of JS, and the friends who need it can refer to The test method matches a regular expression with a text search string. Returns true if a match is found; otherwise returns false. Grammar ? 1 Regexpob