The Essential Guide to HTML5

CHAPTER 7

Code Explanation

Return false;} Return false

} Close function

function savewalls() { Function savewalls header

var w = []; Temporary array

var allw=[]; Temporary array

var sw; Hold final string

var onewall; Hold intermediate string

var i; Index

var lsname = document.sf.slname.value; Extract player's name for the local
storage

for (i=0;i<walls.length;i++) { Loop over all walls

w.push(walls[i].sx); Add sx to w array

w.push(walls[i].sy); Add sy to w array

w.push(walls[i].fx); Add fx to w array

w.push(walls[i].fy); Add fy to w array

onewall = w.join("+"); Make a string

allw.push(onewall); Add to allw array

w = []; Reset w to empty array

} Close loop

sw = allw.join(";"); Now make allw into a string

try { Try

localStorage.setItem(lsname,sw); Save localStorage