52 lines
1.5 KiB
JavaScript
52 lines
1.5 KiB
JavaScript
/**
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* http://stackoverflow.com/questions/1064089/inserting-a-text-where-cursor-is-using-javascript-jquery/1064139#1064139
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*/
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function getCaret(textareaId)
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{
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var textarea = document.getElementById(textareaId);
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var strPos = 0;
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if(textarea.selectionStart || textarea.selectionStart == '0') {
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strPos = textarea.selectionStart
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}
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else if(document.selection)
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{
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textarea.focus();
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var range = document.selection.createRange();
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range.moveStart('character', -textarea.value.length);
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strPos = range.text.length;
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}
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else {
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strPos = -1;
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}
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return strPos;
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}
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function insertAtCaret(textareaId, caret, text)
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{
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var textarea = document.getElementById(textareaId);
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var scrollPos = textarea.scrollTop;
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var front = (textarea.value).substring(0, caret);
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var back = (textarea.value).substring(caret, textarea.value.length);
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textarea.value = front + text + back;
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caret = caret + text.length;
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if(textarea.selectionStart || textarea.selectionStart == '0')
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{
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textarea.selectionStart = caret;
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textarea.selectionEnd = caret;
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textarea.focus();
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}
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else if(document.selection)
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{
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textarea.focus();
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var range = document.selection.createRange();
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range.moveStart('character', -textarea.value.length);
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range.moveStart('character', caret);
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range.moveEnd('character', 0);
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range.select();
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}
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textarea.scrollTop = scrollPos;
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}
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