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我想在计时器滴答后回发之前调用 js 方法。怎么做到呢?
ajax调用事件之前的用户,您必须注册第一个注册事件
Sys.WebForms.PageRequestManager.instance.add_beginRequest(beginRequestHandler)
事件处理程序
function BeginRequestHandler(sender, args) { alert("Before ajax call"); }