Instance parsing Array and String methods

There is example code after the summary of each part. The yellow box method in the code does not change the original array. PS: All example results are obtained by running them one by one.

Array

——Normal method

Stack: pop() push(multiple items)

Queue: shift() unshift(multiple items) )

Sort: sort([function]) reverse()

Conversion: toString() toLocateString() join([separator])

Operation: concat([ Multiple items]) slice(starting point[,end point]) splice(starting point,number[,multiple items])

Position: indexOf(item[,starting point]) lastIndexOf(item[,starting point])

——Iteration method

Parameters: (function(value, position, array itself)[, scope object])

Traversal: forEach()        

Mapping: map()                                                                                       ​

Parameters: ( function(previous value, current value, position, array itself)[, initial value])

Merge: reduce() reduceRight()

String

——Common method

Character: charAt(position) charCodeAt(position) String. fromCharCode(multiple character encoding)

Space: trim()

Compare: localeCompare(string)

Conversion: toUpperCase() toLowerCase() toLocaleUpperCase() toLocaleLowerCase() split([connector])

Operation: substring(starting point [, end point ]) substr(starting point [, number]) replace(RegExp/string, string/function)

concat([multiple items]) slice(starting point[, end point])

Position: indexOf(item[, starting point]) lastIndexOf(item[, starting point])

——Matching method

str.match(reg) reg.exec(str)

str.search(reg) reg.test(str)

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