在JavaScript 中,.contains() 方法用于检查一个节点是否为另一个节点的后代(即是否在 DOM 树中位于另一个节点之下)。如果你尝试在一个非 DOM 元素上调用 .contains(),或者方法名拼写错误(如缺少括号),就会遇到 .contains is not a function 的错误。 正确的使用方式如下: javascript var parentElement = documen...
我收到错误 .contains() is not a function。完整代码在 这里,可能太多而无法粘贴到这里,所以这里是相关位。位置是全局设置以及查询,然后在组件中设置状态。 *编辑,o 是个人位置,json 文件中有 5 个标题和长/纬度 let locationslist = this.state.locations .filter(o => o.contains(this.state.query)) ....
就可以重写函数： function sayHi() { if (arguments[0] == "bye") { return; } ...
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在JS中,判断一个数组中是否包含某个值,一般用indexOf(),今天我们用contains,跟写java一样判断数组包含某个值,但是js原生是没有数组的contains,所以我们要先自己封装一下,给Array...; i++) { if (this[i] == val) { ret...
Check whether a collection has a specific item. Return true if the item is found, or return false if not found. This function is case-sensitive. Extends ExpressionEvaluator Constructors Contains() Initializes a new instance of theContainsclass. ...
<body> <h1>Welcome to My Homepage</h1> <p>My name is Donald</p> <p>I live in Duckburg</p> <p>My best friend is Mickey</p> <script type="text/javascript"> $(document).ready(function(){ $("p:contains(is)").css("background-color","blue"); }); </script> </body> </...
The plugin will not let me click on anything on the page or click on the lightbox elements themselves to open them Uncaught TypeError: Cannot read properties of null (reading 'contains') at HTMLDivElement. (lg.js:2116) (anonymous) @ lg.j...
9.Best way to check if a string contains a substring or not in javascript:# Using regular expressions to check a simple substring is not advisable due to performence related issues. lodash and underscore methods requires to load external javascript files. ...
问题： 一： SELECT tablespace_name, SUM(bytes) free FROM dba_free_space 不是单组分组函数 ...