Browserling itself is an online cross-browser testing service powered by alien technology. Behind the scenes, it's actually powered by our web developer tools that are used by millions of people every month. This random bit generator was created by me and my team at Browserling. After generating count bit groups, the program calls bitsOut.join(groupSeparator) function that creates the final string of all bit groups and it's then displayed on the screen. Then, it adds the optional padding, prefix, and decimal value to this string, and pushes the formatted group of bits to the bitsOut array, and repeats the outer loop again. After filling this array with curBitLen bits, the program converts them into a string by calling the groupBits.join(bitSeparator) method. When a bit is generated, it's pushed to the groupBits array. It generates random bits using the formula bit = Math.floor(Math.random() * 2). At this point, the inner loop is set up and runs curBitLen times. This variable determines how many bits will be randomly generated. To select a group length from several, the program generates a random array index using the formula Math.floor(Math.random() * groupLengths.length) and puts the element with this index into the variable curBitLen. In the example with the value 2, 4, 7-8, the groupLengths array becomes. The contents of the groupLength variable is parsed and stored in the groupLengths array. For example, the value 2, 4, 7-8 will generate bit groups with two, four, or seven, or eight bits. This variable takes a comma-separated list of lengths. The groupLength variable controls how many bits will appear in a single bit group. Otherwise, groups of multiple bits will be generated. If the group length is one, then single bits will be generated. In every iteration, it creates an empty array groupBits = that will store the randomly generated bits. Generating individual bits is the same as generating bit groups of length one. This variable can be set in the options and it determines how many individual bits or bit groups will appear in the output. To generate random bits, it runs two nested for loops. This random bit generator works entirely in your browser and is written in JavaScript.
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