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This article is about how to abbreviate loop traversal in JavaScript. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Abbreviated loop traversal

The for loop is the most basic, but a bit tedious. You can use for...in, for...of, or forEach instead:

/ / Longhand for (var I = 0; I < testData.length; iTunes +) / / Shorthand for (let i in testData) or for (let i of testData)

Array traversal:

Function testData (element, index, array) {console.log ('test [' + index +'] ='+ element);} [11,24,32] .forEach (testData); / / printout: test [0] = 11, test [1] = 24, test [2] = what is the role of 32JavaScript 1, can embed dynamic text in HTML pages. 2. Respond to browser events. 3. Read and write HTML elements. 4. Verify the data before it is submitted to the server. 5. Detect the browser information of visitors. 6. Control cookies, including creation and modification, etc. 7. Server-side programming based on Node.js technology.

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