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//*************************************// // Create a label by defining the Method //*************************************// VaR createlabel = function (ID, name, value ){ VaR label_var = Document. createelement ("label ");   VaR

The problem is as follows:37.5*5.5 = 206.08 (JS calculates this result. I rounded it to two decimal places)I first suspected it was a rounding problem, and I used js to calculate a result: 206.08499999999998.How can this happen? How can we multiply

Js floating-point operations and js floating-point operations Problem Introduction: today, when processing the phase multiplication of two numbers in front-end js, there is a precision deviation: 1.2*3 = 3.9999999995, which should have been 3.6.

In Javascript There are several ways to make a string as a section of the JS code to execute: Use eval (" string to execute ") Use the new Function (" string to execute ") SetTimeOut (" string to execute ", +)

Ajax passes parameters to Xmlhttpreq.onreadystatechange Pass: xmlhttp.onreadystatechange= function () {XX (123)}; Or xmlhttp.onreadystatechange= the new Function ("XX (123)"); It's OK. Copy Code code as follows: Ajax passes

  This article has sorted out some JS common custom public functions such as checking whether the date format, judging whether the characters entered are Chinese, judging whether it is empty, fixed telephone, mobile phone number and so on   The

Copy Code code as follows: Get Object function GetObject (objectid,top) { doc = top?window.top.document:document; if (typeof (ObjectId)!= "Object" && typeof (ObjectId)!= "function") { if (Doc.getelementbyid && Doc.getelementbyid (objectId)

Once the project used to find this code on the Internet before, but under certain conditions Division and addition operations will still appear bugs individual to this slightly optimized Copy Code code as follows: The Division

JS small number of multiplication operations will appear floating-point errors, you can test the specific: The result is 251.89999999999998, not 251.9. There must be a lot of people who have a headache for this problem. So how to solve it? A

Define method to create a label label //*************************************// Copy Code code as follows: var Createlabel = function (ID, name, value) { var Label_var = document.createelement ("label"); var label_id =

JS floating-point data type calculation, the following example: Description: JavaScript multiplication results will be error, in two floating-point numbers are more obvious when multiplying. This function returns a more accurate result of the

make a note for a rainy future . AdditionNumber.prototype.add =functionARG) {var r1,r2,m;try{r1=This.tostring (). Split (".") [1].length}catch (e) {r1=0}Try{r2=arg.tostring (). Split (".") [1].length}catch (e) {r2=0} m=Math.pow (10,Math.max

11. Native JavaScript add to Favorite folderfunction Addfavorite (sURL, stitle) { try { window.external.addFavorite (sURL, stitle) } catch (e) { try { Window.sidebar.addPanel (stitle, sURL, "") } catch (e) {

First, with JS calculation 12.32 * 7 How much is the result? Answer: 86.24000000000001 Why is there such a problem? How to solve?JS in processing decimal multiplication and division of the time there is a bug, the solution can be: The decimal into

 JavaScript (JS) Decimal multiplication Division problemCategory: Javascript2012-07-24 10:09 2851 People read comments (0) favorite reports Javascriptfunctionmath Test div One, use JS to calculate 12.32 * 7   results? Answer:86.24000000000001 

Front. Error handling is critical for Web application development, not anticipating possible errors in advance, not taking a recovery strategy in advance, and potentially leading to a poor user experience. Because any JavaScript error can cause a

First, with JS calculation 12.32 * 7 How much is the result?Answer: 86.24000000000001Why is there such a problem? How to solve?JS in processing decimal multiplication and division of the time there is a bug, the solution can be: The decimal into an

First, with JS calculation12.32 * 7 How much is the result? Answer: 86.24000000000001 Why is there such a problem? How to solve?JS in processing decimal multiplication and division of the time there is a bug, the solution can be: The decimal into

Copy Code code as follows: String.prototype.trim = function () { Return This.replace (/(^\s*) | ( \s*$)/g, ""); } Check to see if it's a date format function IsDate (DATESTR) { var result = Datestr.match (/(^ (1[8-9]\d{2}) | ( [2-9]\d{3}

Main introduction: JavaScript reinforcement tutorial-javascript from simplified to complex JavaScript reinforcement tutorial-from simple to complex JS, no compilation required. The interpreter is part of the JavaScript engine-browser. Dynamic type,