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411 REFERENCE · Wikibooks

Common JavaScript Manual/While and For loops

Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.

While While expression looks so: while(condition){ codeInCycle } Here, if the condition is true then the code inside the loop and then the process goes first but if the condition is true then execution continues after the loop. Let's see example. n = 2; nums = []; while(n < 16){ nums.push(n++); } print(nums); //2,3,4,5,6,7,8,9,10,11,12,13,14,15 For "For" cycle is a short form of while. for(exp1;exp2;exp3){ code } //Equal for exp1; while(exp2){ code; exp3; } Let's rewrite our code. for(n=2,nums=[];n<16;n++){ nums.push(n); } print(nums); // 2,3,4,5,6,7,8,9,10,11,12,13,14,15 75% Conditional statements Do .. While and For .. in loops