本文介绍了有没有一种方法来创建一个JavaScript的字符串函数?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
例如;
var s =function test(){
alert(1);
};
var fnc = aMethod(s);
如果这是字符串,我想要一个叫做fnc的函数。
eval(alert(1)) fnc(); > pops alert screen。
;)不解决我的问题。解决方案
通过使用 Function :
var fn = Function(alert( '你好'));
fn();
当前范围中的变量(如果不是全局变量)不适用于
传递参数也是可能的:
var addition = Function(a,b,return a + b;);
alert(addition(5,3)); //显示'8'
For example;
var s = "function test(){ alert(1); }"; var fnc = aMethod(s);
If this is the string, I want a function that's called fnc. And fnc(); pops alert screen.
eval("alert(1);") doesnt solve my problem.
解决方案
A better way to create a function from a string is by using Function:
var fn = Function("alert('hello there')"); fn();
This has as advantage / disadvantage that variables in the current scope (if not global) do not apply to the newly constructed function.
Passing arguments is possible too:
var addition = Function("a", "b", "return a + b;"); alert(addition(5, 3)); // shows '8'
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