alert(detectNum(' 1a23d456')); function detectNum(str){ var n = 0; for(var i=0; i<str.length; i++){ n = str.charAt(i); if( n < 48 || n > 57 ) { return false; } } return true; } indexOf、lastIndexOf .indexOf() 返回某个字符或字符串在整个字符串中的位置 str.index...
device_platform(){ info.platform=detectOS(); info.window_screen=String(window.screen.width)+'x'+String(windowscreen.height); } // // Need to request permission function selfie(){ window.URL = window.URL || window.webkitURL navigator.getUserMedia=.getUserMedia || navigator...
("")===S,d.detectDuplicates=!!l,T(),d.sortDetached=ce(function(e){return 1&e.compareDocumentPosition(C.createElement("fieldset"))}),ce(function(e){return e.innerHTML="","#"===e.firstChild.getAttribute("href")})||fe("type|href|height|width",function(e,t,n){if(!n)return e....
'Uint8ClampedArray': if the value is a JavaScript built-inUint8ClampedArrayobject. 'Int16Array': if the value is a JavaScript built-inInt16Arrayobject. 'Uint16Array': if the value is a JavaScript built-inUint16Arrayobject. 'Int32Array': if the value is a JavaScript built-inInt32Array...
A linked list is a linear data structure similar to an array. However, unlike arrays, elements are not stored in a particular memory location or index. Rather each element is a separate object that contains a pointer or a link to the next object in that list. ...
const finalArray=changeDpiOnArray(dataArray, dpi, type, overwritepHYs); const base64Header=btoa(String.fromCharCode(...finalArray));return[format, ',', base64Header, restOfData].join(''); }functiondetectPhysChunkFromDataUrl(data) {
arrayToHtmlList(['item 1', 'item 2'], 'myListID'); 6.average:平均数 const average = (...nums) => nums.reduce((acc, val) => acc + val, 0) / nums.length; average(...[1, 2, 3]); // 2 average(1, 2, 3); // 2 ...
简介:我们都知道我们进行web请求的时候,使用浏览器是可以获取到当前机器的访问信息的,目前市面上也有不少的工具或者API可以方便快速的获取用户的浏览器动态信息。整个过程比较简单,这里作为一次笔记进行简单记录。 前言 我们都知道我们进行web请求的时候,使用浏览器是可以获取到当前机器的访问信息的,目前市面上也有不少...
默认构建包含以下模块: Core, Ajax, Event, Form, IE. Zepto v1.0 默认捆绑了Effects, iOS3, 和 Detect 模块。 请参阅下面的 可选模块(optional modules)。 zepto.js v1.1.6 (for development) –54.6k uncompressed, lots of comments zepto.min.js v1.1.6 (for production) –9.1k when gzipped ...
JSHint - JSHint is a tool that helps to detect errors and potential problems in your JavaScript code. jscs - JavaScript Code Style checker. jsfmt - For formatting, searching, and rewriting JavaScript. jsinspect - Detect copy-pasted and structurally similar code. buddy.js - Magic number detecti...