如何在文本选择捕捉事件

Question

我写一个JavaScript脚本来执行的文本选择的任何行动：

HTML

<div class="text"> 
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem 
Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of 
type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release 
of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus 
PageMaker including versions of Lorem Ipsum. 
</div> 

的JavaScript

//Trigger event when mouse down on html element having class ".text" 
$(".text").on("mousedown", function() { 
    //trigger event when mouse up either with text selection or blank 
    $(this).one("mouseup", function() {   
     //get selected text 
     var $textSelection = window.getSelection().toString(); 
     //check if text selected or not 
     if ($textSelection.length > 0){ 
      //alert($textSelection.length) 
      alert("You have selected: "+$textSelection); 
     } 
    }); 
}); 

Answer 1

你有错字有...

$(this).one("mouseup", function() { 

这应该是

$(this).on("mouseup", function() { 

它现在的工作？