khanat-opennel-code/code/web/public_php/api/data/js/tab.js
2014-09-05 01:20:00 -07:00

37 lines
No EOL
1.6 KiB
JavaScript

if(window.addEventListener)
window.addEventListener("load", tabulation, false);
else
window.attachEvent("onload", tabulation);
function tabulation(){
var textareas = document.getElementsByTagName("textarea");
for(var i = 0, t = textareas.length; i < t; i++){
textareas[i].onkeydown = function(e){
var tab = (e || window.event).keyCode == 9;
if(tab){
var tabString = String.fromCharCode(9);
var scroll = this.scrollTop;
if(window.ActiveXObject){
var textR = document.selection.createRange();
var selection = textR.text;
textR.text = tabString + selection;
textR.moveStart("character",-selection.length);
textR.moveEnd("character", 0);
textR.select();
}
else {
var beforeSelection = this.value.substring(0, this.selectionStart);
var selection = this.value.substring(this.selectionStart, this.selectionEnd);
var afterSelection = this.value.substring(this.selectionEnd);
this.value = beforeSelection + tabString + selection + afterSelection;
this.setSelectionRange(beforeSelection.length + tabString.length, beforeSelection.length + tabString.length + selection.length);
}
this.focus();
this.scrollTop = scroll;
return false;
}
};
}
}