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coldfusion 8 developer tutorial phần 2

Khi một yêu cầu cho một an ninh đặc biệt được nhận, phương pháp Web trả về giá của bảo mật. Bởi vì tài sản CacheDuration được thiết lập, nếu một yêu cầu bảo mật tương tự nhận được trong 20 phút tiếp theo (1200 giây), thời gian chạy ASP. | CF AJAX Programming This tells us that if there is no prefix to the browse request on the bind attribute of the cfdiv tag then it will only work with on-page elements. If we prefix it then we can pass the data through a CFC a URL or through a JavaScript function present on the same page. If we bind to a variable present on the same page then whenever the bound element updates the binding will be executed. Bind with Event One of the features of binding that we might overlook its binding based on an event. In the previous examples we mentioned that the normal event trigger for binding took place when the bound field lost its focus. The following example shows a bind that occurs when the key is released. cfform id myForm format html This is my edit box. br cfinput type text name myText cfform hr And this is the bound div container. br cfdiv bind myText@keyup cfdiv This is similar to our first example with the only difference being that the contents of the div are updated as each key is pressed. This works in a manner similar to CFC JavaScript and URL bindings. We might also consider binding other elements on a click event such as a radio button. The following example shows another feature. We can pass any DOM attribute by putting that as an item after the element id. It must be placed before the @ symbol if you are using a particular event. In this code we change the input in order to have a class in which we can pass the value of the class attribute and change the binding attribute of the cfdiv element. cfform id myForm format html This is my edit box. br cfinput type text name myText class test cfform hr And this is the bound div container. br cfdiv bind myText.class@keyup . myText cfdiv Here is a list of the events that we can bind. @click @keyup 204 For More Information www.packtpub.com coldfusion-8-developer-tutorial book Chapter 10 @mousedown @none The @none event is used for grids and trees so that changes don t trigger bind events. Extra Binding Notes If you .