本文实例讲述了JavaScript让Textarea支持tab按键的方法。分享给大家供大家参考。具体实现方法如下:
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 HTMLTextAreaElement.prototype.getCaretPosition = function () { //return the caret position of the textarea return this.selectionStart; }; HTMLTextAreaElement.prototype.setCaretPosition = function (position) { //change the caret position of the textarea this.selectionStart = position; this.selectionEnd = position; this.focus(); }; HTMLTextAreaElement.prototype.hasSelection = function () { //if the textarea has selection then return true if (this.selectionStart == this.selectionEnd) { return false; } else { return true; } }; HTMLTextA新闻热点
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