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Calling & Writing JavaScript Function from Server Side Code Behind 1: private void Page_Load(object sender, System.EventArgs e) 2: { 3: string jScriptValidator; 4: jScriptValidator=”<script> function ReqFieldValidator()” + 5: ” { if (document.forms[0].txtField.value == ”) \n”; 6: jScriptValidator+=”{ alert(‘TextBox cannot be empty’) \n “; 7: jScriptValidator+=”return false; \n”; 8: jScriptValidator+=”} \n”; 9: jScriptValidator+=” return [...]

Introduction

Postback is a concept introduced in ASP.NET and is a very handy method. Postback is built into the ASP.NET and most of the web controls support it without writing any code. 阅读全文 How to call Postback from Javascript （JS带参数调用后台函数）