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Simple message boards made with native JS.
With the following functions: 1, enter the text message in the input box, 2, the message displayed in the message board, 3, delete the message.
HTML and CSS code:
1 <!DOCTYPE HTML>2 <HTMLLang= "en">3 <Head>4 <MetaCharSet= "UTF-8">5 <style>6 *{margin:0;padding:0;}7 #container{8 width:500px;9 Height:500px;Ten One } A #sendMessage{ - width:500px; - Height:50px; the - Line-height:50px; - Margin-bottom:30px; - } + #content{ - width:500px; + Height:400px; A Border:1px solid #808080; at Overflow:Scroll; - } - #messColumn{width:300px;} - - </style> - </Head> in <Body> - <DivID= "Container"> to <DivID= "SendMessage"> + <inputID= "Messcolumn"type= "text"> - <inputID= "BTN"type= "button"value= "message"> the </Div> * <!--should put a UL in the content - $ <DivID= "Content"></Div>Panax Notoginseng </Div>View Code
JS Code:
First, when clicking the Message button, create and add a DIV element in the message board div to pass the text box contents to this element.
Second, add the "delete" button to the div element and add the click event to the Delete.
Third, when you click the Delete button, use the RemoveChild function to delete
1 varMesscol=document.getelementbyid ("Messcolumn");2 varBtn=document.getelementbyid ("BTN");3 varCon=document.getelementbyid ("Content");4btn.onclick=function(){5 if(MessCol.value.trim () = = ""){6Alert ("The input cannot be empty or a space");7 return;8 }9 varMessdiv=document.createelement ("div");TenMessdiv.setattribute ("Style", "width:450px;height:30px;border:2px dotted #808080; margin-bottom:5px;"); One { A //This block of code is used to store the code that constructs Messdiv content: message content and style of delete key - varMesscon = document.createelement ("div"); -Messcon.setattribute ("Style", "Float:left;width:350px;height=30px;line-height:30px;overflow:auto;"); the vardel = document.createelement ("a"); -Del.setattribute ("Style", "float:left;width:50px;height:30px;line-height:30px;"); -Del.setattribute ("href", "javascript:;"); -del.innerhtml = "Delete"; + Messdiv.appendchild (Messcon); - Messdiv.appendchild (del); +Messcon.innerhtml=Messcol.value; Adel.onclick=function(){ atCon.removechild ( This. parentnode);//let the parent element content Delete the messdiv of the child element - } - } - Con.appendchild (messdiv); -Messcol.value= "";//clears the character contents of the input box -}
Using JavaScript to implement a simple message board
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