Home > Article > Web Front-end > js operation copy text

js operation copy text

php中世界最好的语言Original: 2018-06-08 11:12:151485browse

This time I will bring you the js operation to copy text. What are the precautions for js operation to copy text? The following is a practical case, let’s take a look.

I recently encountered a need to click a button to copy the text in the

tag to the clipboard

I have copied the contents of the input box before. I thought it was almost the same, but I found that It didn’t work at all

I tried various methods, and finally used a blind trick to achieve the following effect

##1. Principle analysis

The browser provides the copy command, which can copy the selected content

document.execCommand("copy")

If it is an input box, you can use the

select() method, Select the text in the input box, and then call the copy command to copy the text to the clipboard

But the select() method is only valid for and

, but not for <p> <p style="text-align: left;"></p>My final solution is to add a <textarea> to the page and then hide it<p style="text-align: left;"></p>
<p style="text-align: left;">When clicking the button, first remove the <textarea> Change value to the innerText of <p>, and then copy the content in <textarea> <strong></strong></p>
<p style="text-align: left;">2. Code implementation<strong></strong></p>HTML part<p style="text-align: left;"></p>
<pre class="brush:php;toolbar:false"><style type="text/css">
  .wrapper {position: relative;}
  #input {position: absolute;top: 0;left: 0;opacity: 0;z-index: -10;}
</style>
<p class="wrapper">
  <p id="text">我把你当兄弟你却想着复制我？</p>
  <textarea id="input">这是幕后黑手</textarea>
  <button onclick="copyText()">copy</button>
</p></pre> JS part<p style="text-align: left;"></p>
<pre class="brush:php;toolbar:false"><script type="text/javascript">
  function copyText() {
   var text = document.getElementById("text").innerText;
   var input = document.getElementById("input");
   input.value = text; // 修改文本框的内容
   input.select(); // 选中文本
   document.execCommand("copy"); // 执行浏览器复制命令
   alert("复制成功");
  }
 </script></pre>Personal test, Firefox 48.0, Chrome 60.0, IE 8 can all be used<p style="text-align: left;"></p>I believe you have mastered the method after reading the case in this article. For more exciting things, please pay attention to php Chinese Other related articles online! <p></p>Recommended reading: <p></p>
<p>How to dynamically bind class names in WeChat mini programs<a href="http://www.php.cn/xiaochengxu-401633.html" target="_blank"></a><br></p>
<p>Implementation of the first letter search function in the address book <a href="http://www.php.cn/js-tutorial-401803.html" target="_blank" style="font-size: 14px;"></a><br></p><p>The above is the detailed content of js operation copy text. For more information, please follow other related articles on the PHP Chinese website!</p></div><div class="nphpQianMsg"><div class="clear"></div></div><div class="nphpQianSheng"><span>Statement：</span><div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn</div></div></div><div class="nphpSytBox"><span>Previous article：<a class="dBlack" title="How to create back-end data with json-server" href="http://m.php.cn/faq/401835.html">How to create back-end data with json-server</a></span><span>Next article：<a class="dBlack" title="How to create back-end data with json-server" href="http://m.php.cn/faq/401839.html">How to create back-end data with json-server</a></span></div><div class="nphpSytBox2"><div class="nphpZbktTitle"><h2>Related articles</h2><em><a href="http://m.php.cn/article.html" class="bBlack"><i>See more</i><b></b></a></em><div class="clear"></div></div><ul class="nphpXgwzList"><li><b></b><a href="http://m.php.cn/faq/1609.html" title="深入浅析Bootstrap列表组组件" class="aBlack">深入浅析Bootstrap列表组组件</a><div class="clear"></div></li><li><b></b><a href="http://m.php.cn/faq/1640.html" title="JavaScript函数柯里化详解" class="aBlack">JavaScript函数柯里化详解</a><div class="clear"></div></li><li><b></b><a href="http://m.php.cn/faq/1949.html" title="JS密码生成与强度检测完整实例(附demo源码下载)" class="aBlack">JS密码生成与强度检测完整实例(附demo源码下载)</a><div class="clear"></div></li><li><b></b><a href="http://m.php.cn/faq/2248.html" title="Angularjs整合微信UI（weui）" class="aBlack">Angularjs整合微信UI（weui）</a><div class="clear"></div></li><li><b></b><a href="http://m.php.cn/faq/2351.html" title="JavaScript快速切换繁体中文和简体中文的方法及网站支持简繁体切换的绝招_javascript技巧" class="aBlack">JavaScript快速切换繁体中文和简体中文的方法及网站支持简繁体切换的绝招_javascript技巧</a><div class="clear"></div></li></ul></div></div><div class="nphpFoot"><div class="nphpFootBg"><ul class="nphpFootMenu"><li><a href="http://m.php.cn/"><b class="icon1"></b><p>Home</p></a></li><li><a href="http://m.php.cn/course.html"><b class="icon2"></b><p>Course</p></a></li><li><a href="http://m.php.cn/wenda.html"><b class="icon4"></b><p>Q&A</p></a></li><li><a href="http://m.php.cn/login"><b class="icon5"></b><p>My</p></a></li><div class="clear"></div></ul></div></div><div class="nphpYouBox" style="display: none;"><div class="nphpYouBg"><div class="nphpYouTitle"><span onclick="$('.nphpYouBox').hide()"></span><a href="http://m.php.cn/"></a><div class="clear"></div></div><ul class="nphpYouList"><li><a href="http://m.php.cn/"><b class="icon1"></b><span>Home</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/course.html"><b class="icon2"></b><span>Course</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/article.html"><b class="icon3"></b><span>Article</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/wenda.html"><b class="icon4"></b><span>Q&A</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/dic.html"><b class="icon6"></b><span>Dictionary</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/course/type/99.html"><b class="icon7"></b><span>Manual</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/xiazai/"><b class="icon8"></b><span>Download</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/faq/zt" title="Topic"><b class="icon12"></b><span>Topic</span><div class="clear"></div></a></li><div class="clear"></div></ul></div></div><div class="nphpDing" style="display: none;"><div class="nphpDinglogo"><a href="http://m.php.cn/"></a></div><div class="nphpNavIn1"><div class="swiper-container nphpNavSwiper1"><div class="swiper-wrapper"><div class="swiper-slide"><a href="http://m.php.cn/" >Home</a></div><div class="swiper-slide"><a href="http://m.php.cn/article.html" class="hover">Article</a></div><div class="swiper-slide"><a href="http://m.php.cn/wenda.html" >Q&A</a></div><div class="swiper-slide"><a href="http://m.php.cn/course.html" >Course</a></div><div class="swiper-slide"><a href="http://m.php.cn/faq/zt" >Topic</a></div><div class="swiper-slide"><a href="http://m.php.cn/xiazai"  >Download</a></div><div class="swiper-slide"><a href="http://m.php.cn/game" >Game</a></div><div class="swiper-slide"><a href="http://m.php.cn/dic.html" >Dictionary</a></div><div class="clear"></div></div></div><div class="langadivs"  ><a href="javascript:;" class="bg4 bglanguage"></a><div class="langadiv" ><a  onclick="javascript:setlang('zh-cn');" class="language course-right-orders chooselan "  href="javascript:;"><span>简体中文</span><span>（ZH-CN）</span></a><a  onclick="javascript:;" class="language course-right-orders chooselan chooselanguage"  href="javascript:;"><span>English</span><span>（EN）</span></a><a  onclick="javascript:setlang('zh-tw');" class="language course-right-orders chooselan "  href="javascript:;"><span>繁体中文</span><span>（ZH-TW）</span></a><a  onclick="javascript:setlang('ja');" class="language course-right-orders chooselan "  href="javascript:;"><span>日本語</span><span>（JA）</span></a><a  onclick="javascript:setlang('ko');" class="language course-right-orders chooselan "  href="javascript:;"><span>한국어</span><span>（KO）</span></a><a  onclick="javascript:setlang('ms');" class="language course-right-orders chooselan "  href="javascript:;"><span>Melayu</span><span>（MS）</span></a><a  onclick="javascript:setlang('fr');" class="language course-right-orders chooselan "  href="javascript:;"><span>Français</span><span>（FR）</span></a><a  onclick="javascript:setlang('de');" class="language course-right-orders chooselan "  href="javascript:;"><span>Deutsch</span><span>（DE）</span></a></div></div><script>            var swiper = new Swiper('.nphpNavSwiper1', {
                slidesPerView : 'auto',
                observer: true,//修改swiper自己或子元素时，自动初始化swiper
                observeParents: true,//修改swiper的父元素时，自动初始化swiper

});
        </script></div></div><script>isLogin = 0;</script><script type="text/javascript" src="/static/layui/layui.js"></script><script type="text/javascript" src="/static/js/global.js?4.9.47"></script></div><script src="https://vdse.bdstatic.com//search-video.v1.min.js"></script><link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css' type='text/css' media='all'/><script type='text/javascript' src='/static/js/viewer.min.js?1'></script><script type='text/javascript' src='/static/js/jquery-viewer.min.js'></script><script>jQuery.fn.wait = function (func, times, interval) {
    var _times = times || -1, //100次
    _interval = interval || 20, //20毫秒每次
    _self = this,
    _selector = this.selector, //选择器
    _iIntervalID; //定时器id
    if( this.length ){ //如果已经获取到了，就直接执行函数
        func && func.call(this);
    } else {
        _iIntervalID = setInterval(function() {
            if(!_times) { //是0就退出
                clearInterval(_iIntervalID);
            }
            _times <= 0 || _times--; //如果是正数就 --

_self = $(_selector); //再次选择
            if( _self.length ) { //判断是否取到
                func && func.call(_self);
                clearInterval(_iIntervalID);
            }
        }, _interval);
    }
    return this;
}
$("table.syntaxhighlighter").wait(function() {
    $('table.syntaxhighlighter').append("<p class='cnblogs_code_footer'><span class='cnblogs_code_footer_icon'></span></p>");
});
$(document).on("click", ".cnblogs_code_footer",function(){
      $(this).parents('table.syntaxhighlighter').css('display','inline-table');$(this).hide();
});
$('.nphpQianCont').viewer({navbar:true,title:false,toolbar:false,movable:false,viewed:function(){$('img').click(function(){$('.viewer-close').trigger('click');});}});
</script></body></html>