1
財產子,我有我下面的代碼這是給錯誤如下:無法讀取的不確定
Cannot read property substring of undefined (Uncaught type error)
下面是我的代碼,我無法找出什麼是錯在這裏?
function cmt_btnsave(img) {
$img = $(img);
$this = $($img.prop('id').replace('img', 'txt')); //get textarea
saveComments($this, true);
}
function saveComments($this, isFinal) {
var controllerFuncParams = new Object();
controllerFuncParams.sat = "@asi.sat";
controllerFuncParams.s = "@asi.s";
controllerFuncParams.sor = "@asi.sor";
// this line is throwing exception
controllerFuncParams.c = $this.val().substring(0, "@charmax_eleComment");
......
}
我不知道這裏有什麼問題?任何想法可能是錯的?