JavaScript--字符串--模板字符串 字符串可以用反引号包裹起来,其中的${expression}表示特殊的含义,JavaScript会将expression代表的变量的值和反引号中的其它普通字符串顺序连接起来,拼接成一个新的字符串,示例如下: let name = 'zhangsan'; let str = `hello,${name}`; console.log(str); /*下面是打印结果*/ hello,zhangsan…
jQuery(document).ready(function($) { /* getting viewport width*/ var responsive_viewport = $(window).width(); /* if is below 481px */ if(responsive_viewport < 481) { } /* end smallest screen*/ /* if is larger than 481px */ if (responsive_viewport >…
vue文件模板 模板变量 https://code.visualstudio.com/docs/editor/userdefinedsnippets#_variables vue.json { // Place your snippets for vue here. Each snippet is defined under a snippet name and has a prefix, body and // description. The prefix is what is used t…
function checkImgType(input) { var this_ = document.getElementsByName('imgFile')[0]; var filepath = this_.value; var extStart = filepath.lastIndexOf("."); var ext = filepath.substring(extStart, filepath.length).toUpperCase(); if (ext != ".P…