Ajax

Ajax login verification The js file is as follows: Var xmlHttp; Function IMG1_onclick (){ CheckIsValid (); } Function CheckIsValid () { CreatXmlHttpRequest (); Var userName = document. getElementById ("AdminText "); Var passWord = document.

Javascript uses substr to obtain the substring of a string

We often see some websites that want to fill out a form for registration. One is that when the text box has a focus, the text box prompts to disappear. If we leave the text box, the western-style file prompts will come out, below I will introduce

In the past, we used SWFupload to upload files directly, and then the parameters were processed separately. Next I will introduce other parameters for passing the form using SWFupload. On the upload page, the value is always not obtained. Later, a

The kindeditor editor does not contain blockquote tags by itself. If you need to add tags, You need to modify them by yourself, next, I will introduce you to the steps for adding blockquote tags to the kindeditor editor in eblog. For more

We know that in IE browsers, we can monitor the loading status of elements through onreadystatechange, and then determine whether the elements are loaded through the readyState attribute. In standard browsers such as Chrome and FireFox, we can

This article introduces a good js control page to open the program code in a specific iframe. If you need to know it, please do not go to the reference page. When writing the system management backend, we often use iframe for management, but there

This article describes how to solve the problem that JavaScript cannot read the src file of the script tag. Script tag Generally, when we create a script tag on the page, src either introduces an external js file:? 1 script

On a large portal website, we will see that the ads displayed for the first time are different. Next I will introduce you to the random array strings. In fact, the ads are almost random. Instance The Code is as follows: Copy code

Next I will introduce to you how to use the toLocaleUpperCase (), toUpperCase (), toLocaleLowerCase (), and toLowerCase () functions of js to convert uppercase and lowercase letters. Next I will introduce it to you. ToLocaleUpperCase converts all

Today, when I read the javascript advanced Program Design book, I saw an article on the security scope. Next I will write about the security scope usage of js constructor based on my own knowledge. Let's take a test. The summary is as

In js, we can use the length function to determine the length of common pure letters and numbers. However, we may not be very accurate about Chinese characters, below I will add some related instances to your favorites. For example, use the length

The reason for the invalid session and cookie for iframe cross-origin logon in IE browser is that the P3P (Platform for Privacy Preferences Project (P3P) specification supported by IE6/IE7) by default, the Protocol prevents third parties from having

Onbeforeunload and onunload events are the functions of the two functions before and when the page is loaded, which can prevent prompt refresh when the page is refreshed or when the page is closed, next I will introduce the usage of onbeforeunload

Many people think that programming languages are only used for work, and there is no pleasure. In fact, as long as we make full use of our whimsy, there is also an interesting aspect of rigid things. This article tells you that using JavaScript can

Yesterday I made a simple project and required a select menu with three levels of linkage. However, IE6, which cannot afford to be hurt, encountered a select bug that cannot be hidden, I have also introduced the select layer-high issue in IE6, which

Today, I just need to judge that the iframe loading is complete. I just found out that the method for this article is perfect. Var iframe = document. createElement ("iframe "); Iframe. src = "http://www.bkjia.com "; If (! /* @ Cc_on! @ */0) {// if

Today, a friend asked the webmaster about how to obtain the url parameter value. In webpage design, sometimes we need to obtain the Link parameter on the client, A common method is to use a link as a string, break it down according to the link

Var Class = { Create: function (){ Return function (){ This. initialize. apply (this, arguments ); } } }; Object. extend = function (destination, source ){ For (var property in source) destination [property] = source [property]; Return destination; }

The tutorials on the Internet are provided with an example. I don't know where to use $. getJSON to implement cross-origin Ajax. After some time of "research", I will write down the results. Client: When $. getJSON () is used to transmit the first