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Create 203-remove-linked-list-elements.js

Solved remove linked linked list in JS.

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	`1`	`+// problem link https://leetcode.com/problems/remove-linked-list-elements/`
	`2`	`+// time complexity O(n).`
	`3`	`+`
	`4`	`+varremoveElements=function(head,val){`
	`5`	`+// let currunt = head;`
	`6`	`+letpre=newListNode(null,head);`
	`7`	`+letdummy=pre;`
	`8`	`+while(head){`
	`9`	`+if(head.val==val){`
	`10`	`+while(head&&head.val==val){`
	`11`	`+head=head.next;`
	`12`	`+}`
	`13`	`+pre.next=head;`
	`14`	`+pre=head;`
	`15`	`+if(head){`
	`16`	`+temp=head;`
	`17`	`+head=head.next;`
	`18`	`+temp=null;`
	`19`	`+}`
	`20`	`+continue;`
	`21`	`+}`
	`22`	`+pre=pre.next;`
	`23`	`+head=head.next;`
	`24`	`+}`
	`25`	`+`
	`26`	`+returndummy.next;`
	`27`	`+};`

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