Javascript implementation prohibits copying web page content summary_javascript skills

Method 1:

// 禁用右键菜单、复制、选择
$(document).bind("contextmenu copy selectstart", function() {
  return false;
});

Method 2:

// 禁用Ctrl+C和Ctrl+V（所有浏览器均支持）
$(document).keydown(function(e) {
  if(e.ctrlKey && (e.keyCode == 65 || e.keyCode == 67)) {
    return false;
  }
});

Method 3:

// 设置CSS禁止选择（如果写了下面的CSS则不需要这一段代码，新版浏览器支持）
$(function() {
  $("body").css({
    "-moz-user-select":"none",
    "-webkit-user-select":"none",
    "-ms-user-select":"none",
    "-khtml-user-select":"none",
    "-o-user-select":"none",
    "user-select":"none"
  });
});

Method 4: To prevent JavaScript from becoming invalid after disabling it, you can write it in CSS (supported by new browsers and gradually becoming a standard):

body {
  -moz-user-select:none; /* Firefox私有属性 */
  -webkit-user-select:none; /* WebKit内核私有属性 */
  -ms-user-select:none; /* IE私有属性(IE10及以后) */
  -khtml-user-select:none; /* KHTML内核私有属性 */
  -o-user-select:none; /* Opera私有属性 */
  user-select:none; /* CSS3属性 */
}