I have dynamic variables like:
var4 = 56
var7 = 23
var32 = 53
...
var645 = 21
How can I loop through these in JavaScript so I can push each of these values in an array vars?
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depends on what scope the variables are in ?adeneo– adeneo2016-01-06 13:30:53 +00:00Commented Jan 6, 2016 at 13:30
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They are in global namespace windowGogo– Gogo2016-01-06 13:31:27 +00:00Commented Jan 6, 2016 at 13:31
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I'd suggest to start with an array in the first place if possible.Felix Kling– Felix Kling2016-01-06 13:32:38 +00:00Commented Jan 6, 2016 at 13:32
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2 Answers
You can do that but you must know the first and the last "index" in the name of variables "var"
var var0 = 0;
var var1 = 10;
var var2 = 20;
// var var3 = 30; // <--- this not exist !
var var4 = 40;
var vars = new Array();
for (var i=0; i<5; i++) {
try {
vars.push(eval("var" + i));
} catch(ex) { }
}
Comments
check this pen
var var4 = 56;
var var7 = 23;
var var32 = 53;
//...
var var645 = 21;
var arr = [];
var currentScope = window;
//currentScope = parent.frames[2].window.location;
for( var key in currentScope )
{
console.log(key);
if (key.indexOf( "var" ) == 0 )
{
console.log( "RELEVANT " + key );
var suffix = parseInt( key.split( "var" ).join( "" ) );
if ( !isNaN( suffix ) )
{
arr.push( suffix );
}
}
}
console.log( arr );
