(String) obj).trim().equals(“”); } return false; } /** * 判断对象不为空...* * @param obj * 对象名 * @return 是否不为空 */ public static boolean isNotEmpty(Object obj) { return !...isEmpty(obj); } } 以上所述是小编给大家介绍的Java判断对象是否为空(包括null ,””)的方法...
数字零、false 时可使用本法。...,下面代码是判断为null的情况 var exp = null; if (exp == null) { alert("is null"); } exp 为 undefined 时,也会得到与 null...注意:要同时判断 null、undefined、数字零、false 时可使用本法。...DOCTYPE html> js判断字符串是否全为空(使用trim函数/正则表达式...
$.trim v1.0+ $.trim(string) ⇒ string Remove whitespace from beginning and end of a string; just like String.prototype.trim().$.type v1.0+ $.type(object) ⇒ string Get string type of an object. Possible types are: null undefined boolean number string function array date reg...
Fix Map getLayer not working properly with custom layers. Fix custom layer rendering issues on globe with high pitch. Fix an issue with line-trim-offset on very long lines. Fix rendering issues when ground effects overlap with line layers. Fix landmark visibility issues near tile borders. Fix...
478 String.prototype.trim() ECMAScript5, JavaScript, Method, Prototype, String, String.prototype.trim() trim() 方法会从一个字符串的两端删除空白字符。在这个上下文中的空白字符是所有的空白字符 (space, tab, no-break space 等) 以及所有行终止符字符(如 LF,CR)。 479 String.prototype.trimLeft() Ja...
"trim": "0.0.1", @@ -4782,14 +4508,6 @@ "acorn": "^6.0.2", "acorn-jsx": "^5.0.0", "eslint-visitor-keys": "^1.0.0" - }, - "dependencies": { - "acorn": { - "version": "6.0.2", - "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.2.tgz", - "inte...
What is the best way for user to trim and cut a video and upload it? What is the best way to style ASP.NET controls with CSS? What is the code to close page in VB? What is the use of valueHasMutated() in Knockout js What Java Version for Windows Server 2012? what mime type ...
Update .name properties of String#{trimStart, trimEnd , trimLeft, trimRight}, move to the stage 3Remove mongolian vowel separator (U+180E) from the list of whitespaces for methods like String#trim (ES6 -> ES7) Mark ES2016, ES2017, ES2018, ES2019 features as stable: Array#{ flat, ...
(cur + cls).trim());\n }\n }\n}\n\n/**\n * Remove class with compatibility for SVG since classList is not supported on\n * SVG elements in IE\n */\nfunction removeClass (el, cls) {\n /* istanbul ignore else */\n if (el.classList) {\n if (cls.indexOf(' ') > ...
[i].trim() === '') {\n i++;\n }\n return url.substr(i, 5).toLowerCase() === 'data:';\n}\n\n/**\n * Returns the filename or guessed filename from the url (see issue 3455).\n * @param {string} url - The original PDF location.\n * @param {string} defaultFile...