Question

i am trying to clear the text when the user onclick on the text input control as shown below but its not happening... below is the code

 var generate_message = $("<textarea onclick= if (this.value ==  Enter message here... ) this.value =      rows= 5  cols= 45  id= comment >Enter message here...</textarea>");

Answer 1

我们不能在html和javascript中使用单一报价。这在浏览器使器中造成混乱。

通常,我单独使用单一报价和双重报价。我在html中使用双引语,在javascript使用单一引语。

See example below

<textarea onclick="if (this.value ==  Enter message here... ) this.value =   "  rows="5" cols="45" id="comment">Enter message here...</textarea>

Add Fiddle

见Fiddle 。

UPDATE I just realised that you have $("...") so what i suggest you can escape the single quote by putting

http://jsfiddle.net/vVr6g/1/“rel=“nofollow”>。

Answer 2

在 unobtrusive 。道路

$(function(){
    $(document).on("focus","#comment",function(){
    if($(this).val()=="Enter message here...")
       $(this).val("")   
    });        
});

http://jsfiddle.net/8UjkA/11/“rel=“nofollow” http://jsfiddle.net/8UjkA/11/。

友情链接