JS traversal array and print array instance analysis, js instance analysis

JS traversal array and print array instance analysis, js instance analysis

This article analyzes JS traversal array and print array methods. We will share this with you for your reference. The details are as follows:

I have been suffering from headaches and JS print arrays, and I didn't see any good method. I wrote a simple method for backup.

// Traverse the array var dd = {'A': '123', 'B': '123', 'C ': '000000'} dd ['D'] = ['000000', '000000']; // traverses the Array function scan_array (arr) {for (var key in arr) {// This is the key if (typeof (arr [key]) = 'array' | typeof (arr [key]) = 'object ') {// recursively call scan_array (arr [key]);} else {document. write (key + '=' + arr [key] + '<br>') ;}} function successionPrint (str, num) {num = parseInt (num ); var return_str = ''; for (var I = 1; I <= num; I ++) {return_str + = str;} return return_str;} function _ debug (param, flag) {if (! Param | typeof (param) = 'number' | typeof (param) = 'string') {return param;} var t = typeof (param) + '(\ n'; flag = flag? ParseInt (flag) + 1: 1; for (var key in param) {if (typeof (param [key]) = 'array' | typeof (param [key]) = 'object') {var t_tmp = key + '=' + _ debug (param [key], flag); t + = successionPrint ('\ t', flag) + t_tmp + '\ n';} else {var t_tmp = key +' = '+ param [key]; t + = successionPrint (' \ t', flag) + t_tmp + '\ n' ;}} t = t + successionPrint (' \ t', flag-1) + ')'; return t;} function _ debug (param) {alert (_ debug (param ));}