functioncheckNullObj(obj){if(Object.keys(obj).length===0){returnfalse// 如果为空,返回false}returntrue// 如果不为空,则会执行到这一步,返回true} 但这样写,还是太累赘了。可以写成这样: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 functioncheckNullObj(obj){returnObject.keys(obj).length==...
也就是String类型StringUtils.isEmpty(Object str); org.springframework.util包下的参数是Object类,也就是不仅仅能判断String类型,...12345 3、判断List不为空if (tocoupleDOList != null && !...tocoupleDOList.isEmpty()) { } 4、位于org.apache.commons.lang包下ObjectUtils 判断对象是否为空 更多java...
Check if the variable is an empty object ({}).isNotEmptyObjectCheck if the variable is not an empty object ({}).stripEmptyObjectsOmit properties whose values are empty objects.Example:{ a:1, b:{}, c:2 } -> {a:1, c:2}Note: (TODO rename to omitEmptyObjects)...
*/constemptykeysFilter= (obj = {}, debug =false) => {// const newObj = {};letkeys =Object.keys(obj); keys.forEach((key, i) =>{// console.log(`key`, key);// console.log(`obj[key]`, obj[key]);if(typeof(obj[key]) ==="boolean"||typeof(obj[key]) ==="number") {/...
/* 使用正则表达式来判断字符串是否全为空 */functionkongge2(test) {if(test.match(/^\s+$/)){console.log("all space or \\n"); }if(test.match(/^[ ]+$/)){console.log("all space") }if(test.match(/^[ ]*$/)){console.log("all space or empty") ...
publicKeywordCheckUtils(){// 空构造方法}publicstaticvoidcheckInsecureKeyword(Stringcode)throwsException{Set<String>insecure=blacklist.stream().filter(s->StringUtils.containsIgnoreCase(code,s)).collect(Collectors.toSet());if(!CollectionUtils.isEmpty(insecure)){thrownewException("输入字符串不是安全的");...
The result is true if check succeeds, otherwise it's an object with various fields: counterexample - an input for which property fails. tests - number of tests run before failing case is found shrinks - number of shrinks performed exc - an optional exception thrown by property function rngSta...
*new_capacity = JSObject::NewElementsCapacity(index + 1); DCHECK_LT(index, *new_capacity); if (*new_capacity <= JSObject::kMaxUncheckedOldFastElementsLength || (*new_capacity <= JSObject::kMaxUncheckedFastElementsLength && ObjectInYoungGeneration(object))) { return false; } return Should...
Delete an empty bucket.parameters:name {String} bucket name If bucket is not empty, will throw BucketNotEmptyError. If bucket is not exists, will throw NoSuchBucketError. [options] {Object} optional parameters [timeout] {Number} the operation timeout ...
为了向下兼容,exp 为 null 时,typeof null 总返回 object,所以不能这样判断。 代码如下: var exp = null; if (isNull(exp)) { alert("is null"); } 1. 2. 3. 4. 5. 判断字符串是否为空 s 匹配任何空白字符,包括空格、制表符、换页符等等。等价于 [ fnrtv]。 很多情况下,都是用length来直接判...