te')); return $arr; } /* 遍历用户所有主题 * @param $uid 用户ID * @param int $page 页数 * @param int $pagesize 每页记录条数 * @param bool $desc 排序方式 TRUE降序 FALSE升序 * @param string $key 返回的数组用那一列的值作为 key * @param array $col 查询哪些列 */ function thread_tid_find_by_uid($uid, $page = 1, $pagesize = 1000, $desc = TRUE, $key = 'tid', $col = array()) { if (empty($uid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('uid' => $uid), array('tid' => $orderby), $page, $pagesize, $key, $col); return $arr; } // 遍历栏目下tid 支持数组 $fid = array(1,2,3) function thread_tid_find_by_fid($fid, $page = 1, $pagesize = 1000, $desc = TRUE) { if (empty($fid)) return array(); $orderby = TRUE == $desc ? -1 : 1; $arr = thread_tid__find($cond = array('fid' => $fid), array('tid' => $orderby), $page, $pagesize, 'tid', array('tid', 'verify_date')); return $arr; } function thread_tid_delete($tid) { if (empty($tid)) return FALSE; $r = thread_tid__delete(array('tid' => $tid)); return $r; } function thread_tid_count() { $n = thread_tid__count(); return $n; } // 统计用户主题数 大数量下严谨使用非主键统计 function thread_uid_count($uid) { $n = thread_tid__count(array('uid' => $uid)); return $n; } // 统计栏目主题数 大数量下严谨使用非主键统计 function thread_fid_count($fid) { $n = thread_tid__count(array('fid' => $fid)); return $n; } ?>javascript - Invalid character error while using atob() method - Stack Overflow

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    javascript - Invalid character error while using atob() method - Stack Overflow

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    I have read a question in stack overflow with this code work in IE 10 but not work in ie9,

    but still I am facing issue on this.

    var image = canvas.toDataURL();
image = image.replace(/^data:[a-z]*;,/, '');
var byteString = atob(image);
var buffer = new ArrayBuffer(byteString.length);
var intArray = new Uint8Array(buffer);
for (var i = 0; i < byteString.length; i++) {
    intArray[i] = byteString.charCodeAt(i);
}
blob = new Blob([buffer], {type: "image/png"});
window.navigator.msSaveOrOpenBlob(blob, "test.png");

    while converting atob(image) it throw an exception 0x800a139e - JavaScript runtime error: InvalidCharacterError I tried several things but nothing works...

    I got this in image variable

    data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAcIAAAGQCAYAAAA9XmC5AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAABJFSURBVHhe7dvPa5x3fsDxeaR0l3UO9dLuSnJLE3rpzc6pp0KUQ2MLL8Xk1BZWt+7BhmKaGYctfKR3ng8vjyZTE6W5St98PZnF9ZO/NeZsiyWt0+c//RUWQBHxIkQjlBGsEx7Eb/7ZbqQF23zz22vvf+L6+f/Um4BQDeNRqPtvMoy194TQsc5EcIRatv2SZnmY9L1HOOUuDPdADpJCOEIRfQex7BaviCzkXsRxwc5At3kyzJwxMoXZmZfdLnZ7/c3yxwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAvkF6vf8DAs32KwowBEUAAAAASUVORK5CYII=

    please help me.. Thanks in advance..

    I have read a question in stack overflow with this code work in IE 10 but not work in ie9,

    but still I am facing issue on this.

    var image = canvas.toDataURL();
image = image.replace(/^data:[a-z]*;,/, '');
var byteString = atob(image);
var buffer = new ArrayBuffer(byteString.length);
var intArray = new Uint8Array(buffer);
for (var i = 0; i < byteString.length; i++) {
    intArray[i] = byteString.charCodeAt(i);
}
blob = new Blob([buffer], {type: "image/png"});
window.navigator.msSaveOrOpenBlob(blob, "test.png");

    while converting atob(image) it throw an exception 0x800a139e - JavaScript runtime error: InvalidCharacterError I tried several things but nothing works...

    I got this in image variable

    data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAcIAAAGQCAYAAAA9XmC5AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAABJFSURBVHhe7dvPa5x3fsDxeaR0l3UO9dLuSnJLE3rpzc6pp0KUQ2MLL8Xk1BZWt+7BhmKaGYctfKR3ng8vjyZTE6W5St98PZnF9ZO/NeZsiyWt0+c//RUWQBHxIkQjlBGsEx7Eb/7ZbqQF23zz22vvf+L6+f/Um4BQDeNRqPtvMoy194TQsc5EcIRatv2SZnmY9L1HOOUuDPdADpJCOEIRfQex7BaviCzkXsRxwc5At3kyzJwxMoXZmZfdLnZ7/c3yxwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAvkF6vf8DAs32KwowBEUAAAAASUVORK5CYII=

    please help me.. Thanks in advance..

    • javascript
    • internet-explorer-10
    Share Improve this question edited Jun 4, 2024 at 18:09 Grokify 16.4k8 gold badges69 silver badges91 bronze badges asked Oct 27, 2014 at 11:19 SrinivasanSrinivasan 791 gold badge1 silver badge6 bronze badges
    Add a ment  | 

    2 Answers 2

    Reset to default 8

    1) your base64 encoded string probably is not fully valid. you can try to use this code instead of atob

    var decodeBase64 = function(s) {
    var e={},i,b=0,c,x,l=0,a,r='',w=String.fromCharCode,L=s.length;
    var A="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    for(i=0;i<64;i++){e[A.charAt(i)]=i;}
    for(x=0;x<L;x++){
        c=e[s.charAt(x)];b=(b<<6)+c;l+=6;
        while(l>=8){((a=(b>>>(l-=8))&0xff)||(x<(L-2)))&&(r+=w(a));}
    }
    return r;
};

    2) I think it should be image = image.replace(/^[^,]+,/, '');

    3) As far as I know, support of the Blob in IE starts from version 10 - https://developer.mozilla/en-US/docs/Web/API/Blob

    In case someone reachs this and the image = image.replace(/^[^,]+,/, ''); solution doesn't work for them, I got the same error calling atob function in IE11.

    In my case, the error was caused because the base64 string had a carriage return each 76 characters.

    This wasn't a problem for Chrome or Firefox, but IE11 produced the InvalidCharacterError.

    b64Data = b64Data.replace(/\r\n/g, ''); solved my problem.

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