What is jQuery Migrate?
Quoted from dotlayer.com that jQuery Migrate is a javascript library that allows maintaining compatibility of jQuery code developed for jQuery versions older than jQuery version 1.9. It basically returns functionality and features so that older code will still run fine on the latest jQuery versions and beyond.
Usually, if there is old code that only runs on an old version of the jQuery library (Like version 1.7.1) on the Blogger template the code will not run on the latest version of the jQuery library (Current version 3.6.0). So installing jQuery Migrate allows you to re-run the old code installed even if your template uses the latest version of the jQuery library.
For example, the Backward Compatibility system on the PlayStation 3 game console, apart from being able to play PlayStation 3 games, the PS3 game console can still play games from the PlayStation 2. Such is an example.
Of course, it would be even better if there was no old code in your blog template and there was no need to install the code that I will share with you.
How to Install jQuery Migrate on Blogger?
For those of you who add the old code and still want to keep the code but want to use the current jQuery library, you can install the jQuery Migrate code below before </head> tag in your template.
<script type='text/javascript'>
//<![CDATA[
/*! jQuery Migrate v3.0.1 | (c) jQuery Foundation and other contributors | jquery.org/license */
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a={};e.migrateWarnings=[],void 0===e.migrateTrace&&(e.migrateTrace=!0),e.migrateReset=function(){a={},e.migrateWarnings.length=0},"BackCompat"===t.document.compatMode&&r("jQuery is not compatible with Quirks Mode");var i,s=e.fn.init,u=e.isNumeric,c=e.find,l=/\[(\s*[-\w]+\s*)([~|^$*]?=)\s*([-\w#]*?#[-\w#]*)\s*\]/,d=/\[(\s*[-\w]+\s*)([~|^$*]?=)\s*([-\w#]*?#[-\w#]*)\s*\]/g;e.fn.init=function(e){var t=Array.prototype.slice.call(arguments);return"string"==typeof e&&"#"===e&&(r("jQuery( '#' ) is not a valid selector"),t[0]=[]),s.apply(this,t)},e.fn.init.prototype=e.fn,e.find=function(e){var n=Array.prototype.slice.call(arguments);if("string"==typeof e&&l.test(e))try{t.document.querySelector(e)}catch(o){e=e.replace(d,function(e,t,r,n){return"["+t+r+'"'+n+'"]'});try{t.document.querySelector(e),r("Attribute selector with '#' must be quoted: "+n[0]),n[0]=e}catch(e){r("Attribute selector with '#' was not fixed: "+n[0])}}return c.apply(this,n)};for(i in 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removed"),o(e,"complete",e.always,"jQXHR.complete is deprecated and removed")),e};var f=e.fn.removeAttr,y=e.fn.toggleClass,m=/\S+/g;e.fn.removeAttr=function(t){var n=this;return e.each(t.match(m),function(t,o){e.expr.match.bool.test(o)&&(r("jQuery.fn.removeAttr no longer sets boolean properties: "+o),n.prop(o,!1))}),f.apply(this,arguments)},e.fn.toggleClass=function(t){return void 0!==t&&"boolean"!=typeof t?y.apply(this,arguments):(r("jQuery.fn.toggleClass( boolean ) is deprecated"),this.each(function(){var r=this.getAttribute&&this.getAttribute("class")||"";r&&e.data(this,"__className__",r),this.setAttribute&&this.setAttribute("class",r||!1===t?"":e.data(this,"__className__")||"")}))};var h=!1;e.swap&&e.each(["height","width","reliableMarginRight"],function(t,r){var n=e.cssHooks[r]&&e.cssHooks[r].get;n&&(e.cssHooks[r].get=function(){var e;return h=!0,e=n.apply(this,arguments),h=!1,e})}),e.swap=function(e,t,n,o){var a,i,s={};h||r("jQuery.swap() is undocumented and deprecated");for(i in 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Q=e.fn.load,b=e.event.add,w=e.event.fix;e.event.props=[],e.event.fixHooks={},n(e.event.props,"concat",e.event.props.concat,"jQuery.event.props.concat() is deprecated and removed"),e.event.fix=function(t){var n,o=t.type,a=this.fixHooks[o],i=e.event.props;if(i.length)for(r("jQuery.event.props are deprecated and removed: "+i.join());i.length;)e.event.addProp(i.pop());if(a&&!a._migrated_&&(a._migrated_=!0,r("jQuery.event.fixHooks are deprecated and removed: "+o),(i=a.props)&&i.length))for(;i.length;)e.event.addProp(i.pop());return n=w.call(this,t),a&&a.filter?a.filter(n,t):n},e.event.add=function(e,n){return e===t&&"load"===n&&"complete"===t.document.readyState&&r("jQuery(window).on('load'...) called after load event occurred"),b.apply(this,arguments)},e.each(["load","unload","error"],function(t,n){e.fn[n]=function(){var e=Array.prototype.slice.call(arguments,0);return"load"===n&&"string"==typeof e[0]?Q.apply(this,e):(r("jQuery.fn."+n+"() is 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//]]>
</script>Or with this link
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery-migrate/3.0.1/jquery-migrate.min.js'/>If you have added the code above, for those of you who use the template shared on www.idntheme.com and use the jQuery library version 1.7.1, you can replace it with the current version.
<script src='https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'/>Now Replace with this version
<script src='https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js'/>Okay, that's it, that's all from Droidnur123 for the post "How to Install jQuery Migrate on Blogger". Hopefully, this tutorial is useful.
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