extjs源码分析-013(String扩展)
//字符串替换/*var cls = 'my-class', text = 'Some text';var s = String.format('&lt;div class="{0}">{1}&lt;/div>', cls, text);*/Ext.applyIf(String, { format : function(format){ var args = Ext.toArray(arguments, 1); return format.replace(/\{(\d+)\}/g, function(m, i){ return args; }); }, //对字符串中的|\\进行转义输出 escape : function(string) { return string.replace(/('|\\)/g, "\\$1"); }, //在字符串val左边插入size-val.length个指定字符串ch,如果ch未定义则默认为" " leftPad : function (val, size, ch) { var result = String(val); if(!ch) { ch = " "; } while (result.length < size) { result = ch + result; } return result; },})//俩个值切换，调用方式:sort = sort.toggle('ASC', 'DESC'); String.prototype.toggle = function(value, other){ return this == value ? other : value; }; //去除字符串的空格 调用方式:var s = 'foo bar';_s = s.trim(); String.prototype.trim = function(){ var re = /^\s+|\s+$/g; return function(){ return this.replace(re, ""); }; }()
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