JavaScript

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The following is a brief introduction:The first method is to get the object in js. It is more direct. If a page has multiple IDs, such a long document. getElementBy ("id") must be written each time ")Copy codeThe Code is as follows:Document.

The Javascript language is not strictly designed, and errors may occur in many places when you are not careful.For example, consider the following situations.Now, we need to determine whether a global object myObj exists. If it does not exist,

Copy codeThe Code is as follows: Image preview example However, in IE8, because IE8 cleverly hides the real path, alert prints the result C:/fakepath/*. jpg, this method cannot be used.Solution: Go to tools> Internet Options> Security> Custom

Copy codeThe Code is as follows: dataTypeType: StringExpected data type returned by the server. If this parameter is not specified, jQuery automatically determines Based on the MIME information of the HTTP package, for example, XMLThe MIME type is

Note: Get the specified Style element in the Style array of the Dom element.Copy codeThe Code is as follows:Function elementGetStyle (element, style ){Var value = null;If (element. style ){Value = element. style [style];}If (! Value ){If (document.

First Writing MethodCopy codeThe Code is as follows:Var str = "";Var week = new Date (). getDay ();If (week = 0 ){Str = "Today is Sunday ";} Else if (week = 1 ){Str = "Today is Monday ";} Else if (week = 2 ){Str = "Today is Tuesday ";} Else if (week

Today, I encountered a problem in the project (I am not very familiar with the front-end skills, and I am not recommended ):Available dialog box:I didn't think of any good results with jQuery.See the js API documentation Implementation ===

Preface The switch expression is available in many languages, such as java and C waiting. It is easier and clearer to use switch than to use if else.The syntax is simple:Copy codeThe Code is as follows:Switch (n){Case 1:Execution Code Block

Generally, the form submission operation is writtenCopy codeThe Code is as follows:...... Click the submit button or press enter to submit the data to the saveReport page. However, the saveReport page is displayed after submission.How to

Javascript code:Copy codeThe Code is as follows:Function get_page_size (){Var re = {};If (document.doc umentElement & document.doc umentElement. clientHeight){Var doc = document.doc umentElement;Re. width = (doc. clientWidth> doc. scrollWidth )? Doc.

1. for css attributes without hyphens, you can directly use style. attribute name.For example, obj. style. margin, obj. style. width, obj. style. left, obj. style. position, etc.2. for css attributes that contain dashes, remove each dashes and

Copy codeThe Code is as follows:$ (). Ready (function (){For (var I = 0; I /*** This writing method is not professional. If it is in a loop, five events will be registered and alert5 events will be clicked.*/// $ ("# Aa"). click (function (){//

On many websites, we find that when the mouse slides over an image, this image is switched to another image. Let's talk about how this works.Before writing Javascript code, we must have the HTML code of the experiment.Copy codeThe Code is as follows:

Copy codeThe Code is as follows:$ (Function (){// Toggle div$ ("# Gga"). click (function (event ){Event. stopPropagation (); // block a bubble event$ (". Toggleoption"). slideToggle ("fast ");});// Slideup div$ (Document). click (function (event

Demo: Instance code:Copy codeThe Code is as follows: demo Back Home About Me Tutorials Sub Menu 31 Sub Menu 32 Sub Menu 321 Sub Menu 322 Sub Menu 323 Sub Menu 324 Sub Menu 33 Sub Menu 34 Gallery Sub Menu 41

JsCopy codeThe Code is as follows:Var popupStatus = 0;// Loading popup with jQuery magic!Function loadPopup (){// Loads popup only if it is disabledIf (popupStatus = 0 ){$ ("# BackgroundPopup" Development .css ({"Opacity": "0.7"});$ ("#

During the development process today, I suddenly encountered this strange problem. I previously thought that there was a problem with the url parameter passed when I opened the modal form in js. it was okay if I used open. When using the modal form,

First:Copy codeThe Code is as follows:Function Checkreg (){// Verify the phone number, including the phone number 153,159If (document. form. phone. value = "" & document. form. UserMobile. value = ""){Alert ("You must enter at least one phone number

Even a task as simple as this can be complicated without jQuery at our disposal. In plain JavaScript, we cocould add the highlightedclass as shown in the following code snippet:Copy codeThe Code is as follows:Window. onload = function (){Var divs =