Method 1: Convert Array to String Without Commas in JavaScript Using join() Method With Blank Value or Blank Space The “join()” method merges the strings contained in an array and returns them in the form of a string. This method can be utilized to return the merged string value directl...
myArray = myArray.join();console.log(myArray);// parent,child,dog By default, the array items are joined withjoin()by commas. But you can join the elements using something other than a comma: varmyArray = ["apples","oranges","pears"]; myArray = myArray.join("|");console.log(my...
Plus, rest arguments are a real Array, and not merely Array-like like arguments. // bad function concatenateAll() { const args = Array.prototype.slice.call(arguments); return args.join(''); } // good function concatenateAll(...args) { return args.join(''); }...
(#TOC)** ## 逗号 - 不要将逗号放前面 ```javascript // bad var once , upon , aTime; // good var once, upon, aTime; // bad var hero = { firstName: 'Bob' , lastName: 'Parr' , heroName: 'Mr. Incredible' , superPower: 'strength' }; // good var hero = { firstName: 'Bo...
concatmethod is used to merge multiple arrays. It adds the elements of the new array to the back of the original array elements, and then returns a new result array without the original array. ['liu', 'xing'].concat(['love', 'dev']) ...
在进行字符串处理和文本分析时，有时我们需要从字符串列表中删除特殊字符。特殊字符可能是空格、标点符号...
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console.log(myString.split('').reverse().join('')) array.indexOf() vararray=[4,5,3,7,'Hello',2,1,true,false,0];console.log(array.indexOf(true));console.log(array.indexOf(7)); But what would happen if we hadmultiple of a particular value in an array?
//okayvara =newArray(); a[0] = "Joe"; a[1] = 'Plumber';//better codevara = ['Joe','Plumber']; 14. 如何处理一堆的变量声明?省略“var”关键字并用逗号代替(Long list of variables?Omit the "var" keyword and use commas instead ...
var newArray = ['one','two','three']; The same is true for objects. The notation for object literals is pairs of property names and associated values, separated by commas, and wrapped in curly brackets: var newObj = { prop1 : "value", prop2 : function() { ... }, ... }; Th...