Notes for extjs Development

1. Why is the display of the datefield control incomplete recently. You can find such a code on the Internet to solve this problem. 1: Ext. override (Ext. menu. dateMenu, {2: autoWidth: function () {3: var el = this. el, ul = this. ul; 4: if (! El) {5: return; 6:} 7: var w = this. width; 8: if (w) {9: el. setWidth (w); 10:} else if (Ext. isIE &&! Ext. isIE8) {11: el. setWidth (this. minWidth); 12: var t = el. dom. offsetWidth; // force recalc 13: el. setWidth (ul. getWidth () + el. getFrameWidth ("lr"); 14:} 15:} 16 :}); during extjs development, I summarized the following points and hoped to develop extjs. Note: 1. The DOCTYPE definition in doctype html in html is especially sensitive to IE. So I suggest you do not write it. 2. X-UA-Compatible sets the IE parsing version. Since I use IE 9, I can use X-UA-Compatible to set it to IE 6, IE 7, and IE8 versions. The compatibility of IE 8 with extjs2.x is not good. Here I suggest you write less. 3. If you are a newbie of extjs, you are advised to use a later version for development.