How jQuery displays or removes the default value of the input box

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Show or delete the default value of the input box

/ / This snippet will show you how to keep a default value//in a text input field for when a user hasn't entered in//a value to replace itswap_val = []; $(".swap") .each (function (I) {swap_ vale [I] = $(this) .val (); $(this) .focusin (function () {if ($(this). Val () = = swap_ vale [I]) {$(this) .val ("")) ) .focusout (function () {if ($.trim ($(this). Val () = "") {$(this) .val (swap_ vali [I]);});}); above is all the content of the article "how jQuery displays or removes the default values of input boxes". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!