javascript - 两个 javascript 文件冲突

Question

我正在使用 html5 LeanBack Player，当页面上只有 javascritpts 时它效果很好。但是，如果我将这些 javascript 文件添加到 Rails 3 项目中，那么我会在 LeanBack Player 的 javascript 文件中收到错误:

Uncaught TypeError: Object function each(iterator, context) {
  var index = 0;
  try {
    this._each(function(value) {
      iterator.call(context, value, index++);
    });
  } catch (e) {
    if (e != $break) throw e;
  }
  return this;
} has no method ‘split’

在函数 LBPlayer.prototype.resolveTextPlainSubs 中。

我猜这是因为与rails中的原生Prototype冲突，但我不知道如何解决它。谢谢

Answer 1

确实，这与 Array.prototype 的 Prototypes 扩展有冲突:

// leanbackPlayer.js @941
srt = srt.split('\n\n');
var i = 0; var isSub = false;
this.vars.subs[lang] = {};
this.vars.subs[lang].label = {};
this.vars.subs[lang].label = label;
this.vars.subs[lang].track = {};

// Error: using for in over an array is just stupid
//        not even using hasOwnProperty is outright pitiful
for(var s in srt) { 

    // this will also yield `each` but that's a function which has no .split() method
    var st = srt[s].split('\n');
    var time; var j;
    if(st.length >= 2) {
        var t = "";

为了修复它，您应该将 for(var s in srt) 替换为简单的 for 循环:

for(var e = 0, el = srt.length; e < el; e++) {
    var st = srt[e].split('\n');
    var time; var j;
    if(st.length >= 2) {
        var t = "";
        ...
}