PerlやPHPでよく使うeachをJavascriptで使う時はforを使う

var ar = new Array(“あ”,”い”,”う”,”え”,”お”);
for(var i in ar){
    document.write(ar[i] + ‘<br>’);
}

連想配列の時は

var ar2 = {‘あ’:’a’,’い’:’b’,’う’:’c’,’え’:’d’,’お’:’e’};
for(var i in ar2){
    document.write(i + ‘=’ + ar2[i] + ‘<br>’);
}