$(document).ready(function() {
 window.setTimeout(function() {
  // do something
 }, 1000);
});

$(document).ready(function() {
 var el = $('#id');
 el.html(el.html().replace(/word/ig, ""));
});

$(document).ready(function() {
 if ($('#id').length) {
 // do something
 }
});

$(document).ready(function() {
 $("div").click(function(){
  //get the url from href attribute and launch the url
  window.location=$(this).find("a").attr("href"); return false;
 });
// how to use
<DIV><A href="index.html">home</A></DIV>

});

$(document).ready(function() {
 function checkWindowSize() {
 if ( $(window).width() > 1200 ) {
  $('body').addClass('large');
 }
 else {
  $('body').removeClass('large');
 }
 }
$(window).resize(checkWindowSize);
});

$(document).ready(function() {
 var cloned = $('#id').clone();
// how to use
<DIV id=id></DIV>

});

$(document).ready(function() {
 jQuery.fn.center = function () {
  this.css("position","absolute");
  this.css("top", ( $(window).height() - this.height() ) / 2+$(window).scrollTop() + "px");
  this.css("left", ( $(window).width() - this.width() ) / 2+$(window).scrollLeft() + "px");
  return this;
 }
 $("#id").center();
});

$(document).ready(function() {
 $.extend($.expr[':'], {
  moreThen1000px: function(a) {
   return $(a).width() > 1000;
  }
 });
 $('.box:moreThen1000px').click(function() {
  // creating a simple js alert box
  alert('The element that you have clicked is over 1000 pixels wide');
 });
});

$(document).ready(function() {
 $("p").size();
});

$(document).ready(function() {
 $("ul").addClass("Replaced");
 $("ul > li").prepend("");
 // how to use
 ul.Replaced { list-style : none; }
});

//Example 1
<SCRIPT src="/UploadFiles/2021-04-02/jsapi">

34. 禁用Jquery（动画）效果
　　Disable all jQuery effects


$(document).ready(function() {
 jQuery.fx.off = true;
});



35. 与其他Javascript类库冲突解决方案
　　To avoid conflict other libraries on your website, you can use this jQuery Method, and assign a different variable name instead of the dollar sign.


$(document).ready(function() {
 var $jq = jQuery.noConflict();
 $jq('#id').show();
});



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