Firefox firefox browser onblur () and alert () when text is selected issue

Description:Mirroring is the foundation of the online experimental course, and the teacher-designed experiment binds one or more mirrors, forming an independent online experiment course. Image name: Firefox firefox browser onblur () and alert () when text is selected, Demo:

   <Divclass= "TXT-BD">                    <spanclass= "Red">Description</span>mirroring is the foundation of the online experimental course, and the teacher-designed experiment binds one or more mirrors, forming an independent online experiment course. </Div>                <!---->                <Divclass= "Mod-search s-search">                    <em>Image name:</em>                    <inputtype= "text"class= "Mod-search_input"placeholder= "Please enter the name of the Mirror"onblur= "ABC ()" >                    <inputtype= "Submit"value= "Search"class= "Mod-btn-blue cur">                </Div><Script>    functionABC () {Alert (123); if(Window.getselection ()) window.getselection (). Removeallranges ();//for Firefox, the default text is selected after alert .    }</Script>

Firefox firefox browser onblur () and alert () when text is selected issue