我怎么能通过javascript做到这一点？

I have such a text. In p tag I need two symbols from the end of the text to be deleted. How can I do it through javascript?

我有这样的文字。在p标签中,我需要从文本末尾删除两个符号。我怎么能通过javascript做到这一点?

<p>text</p>

2 个解决方案

#1

You're looking for .slice:

你在找.slice:

<p>text</p>
<script>
    var p = document.getElementsByTagName('p')[0];

    p.innerHTML = p.innerHTML.slice(0, -2); // returns "te"
</script>

http://jsfiddle.net/qaq3moof/

#2

try this

html

<p id="txt">text+-</p>
<input type="button" id="btn" value="click">

js

$(function(){
$('#btn').click(function(){
var text = $('#txt').html();
   var newStr = text.slice(0,-2);
    alert(newStr);
});
});

this will do the trick for you. It uses jquery and javascript. Check out the fiddle eliminate last two symbols from a p element

这将为你做到这一点。它使用jquery和javascript。检查小提琴消除p元素中的最后两个符号

#1