我正在搜索用户从数组中输入的数据,它工作正常,但它区分大小写我想删除这个区分大小写的
else if(document.getElementById('drop_down_list_1').value=="Beef"){
if(document.getElementById('search_input').value==""){
alert("Please Enter a charactor / word..");
return false;
}
else{
var con = document.getElementById('first_div');
var con2 = document.getElementById('first_div2');
var char = document.getElementById('search_input').value;
var str = '';
var j = 0;
var ad = ['CLARIFIDE Deadlines 2012 - 2013 Nov','C','REPRODUCTIVE VACCINES — REPRODUCTIVE CLAIMS','M','M', 'R'];
var len = ad.length;
//var break_line = '<br>';
for (j=0; j<len; j++) {
var str = ad[j];
var n=str.indexOf(char);
if (n == 0)
con.innerHTML += '<table id="results" width="920" border="1" style="margin:-30px 0 0 -10px;"> <tr><td>'
+ str
+ '</td><td colspan="4" align="right"><a href="presenter.command(\'viewPdf\', {\'path\':%20\'/images/pdf/Beef/'+j+'.pdf\'});"><img src="images/view.png" style="margin-left:250px;"> </a> <img src="images/email.png"></td></tr><tr><td></td><td colspan="4" align="right"></td></tr><tr><td></td><td colspan="4" align="right"></td></tr><tr><td></td><td colspan="4" align="right"></td></tr><tr><td></td><td colspan="4" align="right"></td></tr><tr><td></td><td colspan="4" align="right"></td></tr></table>'
//+ break_line;
//break_line = '<br>';
}
}
}
那么如何使搜索不区分大小写。