استفاده از جاوا اسكريپت

[mohandesan]

چه طوذ مي توان در بين كدهاي صفحات asp.net كدهاي جاوااسكريپت نوشت ؟

[m.hamidreza]

protected void Page_Load(object sender, EventArgs e)
{
//txt_area.Attributes.Add("onkeyup", "check_max_char(this)");
String callbackScript = "var max=20; var counter=document.getElementById('"+txt_counter.ClientID +"');";
callbackScript +="counter.value=max;";
callbackScript += "function check_max_char(obj){";
callbackScript += "str=obj.value;";
callbackScript += "len=str.length;";
callbackScript += "if(len>max){";
callbackScript += "str=str.substr(0,max);";
callbackScript += "alert('OverFlow');";
callbackScript += "obj.value=str;";
callbackScript += "}";
callbackScript += "document.getElementById('" + txt_counter.ClientID + "');";
callbackScript += "txt_counter.value=max-obj.value.length;";
callbackScript += "}";

ClientScript.RegisterStartupScript(this.GetType(), "ReceiveServerData", callbackScript,true);
}